IBOV 172,060.43 ▲ 0.42% IPC MEX 72,006.05 ▲ 0.16% MERVAL 2,848,945 — — USD/BRL5.59▲ 0.07% USD/MXN18.60▲ 0.02% USD/CLP984.53▲ 0.18% USD/COP3,279▼ 0.87% USD/PEN3.41▼ 0.02% USD/ARS1,544▼ 0.03% USD/UYU40.52▲ 3.32% USD/PYG6,174▲ 3.14% USD/BOB11.63▲ 1.12% USD/DOP60.48▲ 0.05% USD/CRC446.01▲ 1.79% USD/GTQ7.64▲ 3.16% USD/HNL26.90▲ 3.29% USD/NIO36.62▲ 2.73% USD/VES902.19▼ 0.13% USD/PAB1.00— 0.00% USD/BZD2.00— 0.00% USD/JMD157.49▲ 2.41% USD/TTD6.72▲ 2.22% EUR/BRL6.19▼ 0.58% BRENT 91.91 ▼ 0.92% WTI 85.65 ▼ 1.02% IRON ORE 161.91 — — COPPER 6.21 ▼ 0.96% GOLD 3,958 ▼ 1.06% SILVER 51.27 ▼ 1.19% SOY 1,228 ▼ 0.10% CORN 447.25 ▼ 0.17% WHEAT 596.00 ▼ 0.58% COFFEE 269.00 — 0.00% SUGAR 18.03 ▼ 2.44% ORANGE JUICE 146.60 ▼ 0.10% COTTON 82.88 ▲ 5.55% COCOA 5,077 ▲ 3.46% BEEF 218.98 ▼ 0.10% CATTLE 332.63 ▲ 0.69% LITHIUM 61.07 ▲ 1.82% PETR4 43.55 ▼ 3.11% VALE3 64.43 ▼ 0.57% ITUB4 41.72 ▲ 1.26% BBDC4 14.33 ▼ 1.44% ABEV3 15.85 ▲ 0.38% BBAS3 16.89 ▼ 1.23% B3SA3 14.80 ▲ 2.21% WEGE3 51.61 ▲ 1.30% PRIO3 61.47 ▲ 2.42% SUZB3 53.80 ▼ 1.21% RENT3 30.24 ▲ 1.51% AZZA3 15.37 ▲ 4.34% CSAN3 3.03 ▲ 13.06% RAIZ4 0.30 ▼ 98.60% PCAR3 2.54 ▼ 0.78% GMAT3 4.08 ▲ 7.09% PSSA3 45.98 ▼ 1.48% CVCB3 0.86 — 0.00% POSI3 3.32 ▲ 5.40% SLCE3 17.05 ▼ 0.23% NATU3 5.62 ▲ 1.26% BRKM5 2.92 — 0.00% RANI3 8.39 ▼ 0.71% CSNA3 4.52 ▲ 3.20% IBOV 172,060.43 ▲ 0.42% IPC MEX 72,006.05 ▲ 0.16% MERVAL 2,848,945 — — USD/BRL 5.58 ▲ 0.02% USD/MXN 18.57 ▼ 0.15% USD/CLP 983.91 ▲ 0.11% USD/COP 3,288 ▼ 0.57% USD/PEN 3.41 ▼ 0.02% USD/ARS 1,544 ▼ 0.03% USD/UYU 40.52 ▲ 3.32% USD/PYG 6,174 ▲ 3.14% USD/BOB 11.63 ▲ 1.12% USD/DOP 60.48 ▲ 0.05% USD/CRC 446.01 ▲ 1.79% USD/GTQ 7.64 ▲ 3.16% USD/HNL 26.90 ▲ 3.29% USD/NIO 36.62 ▲ 2.73% USD/VES 902.19 ▼ 0.13% USD/PAB 1.00 — 0.00% USD/BZD 2.00 — 0.00% USD/JMD 157.49 ▲ 2.41% USD/TTD 6.72 ▲ 2.22% EUR/BRL 6.20 ▼ 0.57% BRENT 91.91 ▼ 0.92% WTI 85.65 ▼ 1.02% IRON ORE 161.91 — — COPPER 6.21 ▼ 0.96% GOLD 3,958 ▼ 1.06% SILVER 51.27 ▼ 1.19% SOY 1,228 ▼ 0.10% CORN 447.25 ▼ 0.17% WHEAT 596.00 ▼ 0.58% COFFEE 269.00 — 0.00% SUGAR 18.03 ▼ 2.44% ORANGE JUICE 146.60 ▼ 0.10% COTTON 82.88 ▲ 5.55% COCOA 5,077 ▲ 3.46% BEEF 218.98 ▼ 0.10% CATTLE 332.63 ▲ 0.69% LITHIUM 61.07 ▲ 1.82% PETR4 43.55 ▼ 3.11% VALE3 64.43 ▼ 0.57% ITUB4 41.72 ▲ 1.26% BBDC4 14.33 ▼ 1.44% ABEV3 15.85 ▲ 0.38% BBAS3 16.89 ▼ 1.23% B3SA3 14.80 ▲ 2.21% WEGE3 51.61 ▲ 1.30% PRIO3 61.47 ▲ 2.42% SUZB3 53.80 ▼ 1.21% RENT3 30.24 ▲ 1.51% AZZA3 15.37 ▲ 4.34% CSAN3 3.03 ▲ 13.06% RAIZ4 0.30 ▼ 98.60% PCAR3 2.54 ▼ 0.78% GMAT3 4.08 ▲ 7.09% PSSA3 45.98 ▼ 1.48% CVCB3 0.86 — 0.00% POSI3 3.32 ▲ 5.40% SLCE3 17.05 ▼ 0.23% NATU3 5.62 ▲ 1.26% BRKM5 2.92 — 0.00% RANI3 8.39 ▼ 0.71% CSNA3 4.52 ▲ 3.20%
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Thursday, November 12, 2026

Fifty-five Percent of Pro-Bolsonaro Twitter Publications Performed by Robots

By · · 4 min read

RIO DE JANEIRO, BRAZIL – A study by the Federal University of Rio de Janeiro (UFRJ) and the São Paulo School of Sociology and Politics Foundation (FespSP) shows that robots were behind more than half of the publications in favor of President Jair Bolsonaro on Twitter.

The survey identified the action of 23,500 non-human users in favor of the President out of a total universe of 66,000 users who published the "hashtag" that day.
The survey identified the action of 23,500 non-human users in favor of the President out of a total universe of 66,000 users who published the “hashtag” that day.
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Through data science tools, teachers Rose Marie Santini, UFRJ, and Isabela Kalil, of Fesp, show that robots accounted for 55 percent of the 1.2 million posts that used the expression #BolsonaroDay to honor the president on March 15th, the day of pro-government street rallies.

The survey identified the action of 23,500 non-human users in favor of the President out of a total universe of 66,000 users who published the “hashtag” that day. It is an army of “bots” and cyborgs created, cultivated and programmed to mass-share whatever subject is convenient for those who command them, at the precise moment selected for the attack.

To this troop 1,700 accounts were added that published about #BolsonaroDay and, hours later, were deleted from Twitter. The behavior, according to the researchers, is typical of bots. Before disappearing, the group was behind 22,000 tweets in favor of #BolsonaroDay.

The information was processed in the Gotcha artificial intelligence software. The bot classifier was developed over the past two years by the Microsociology and Network Study Laboratory (NetLab) of UFRJ, with support from the Twist System startup. The partnership with Fesp’s Studies of Urban Ethnography Center (NEU) consisted in developing, throughout one year, the algorithm to work based on a database of topics related to Brazilian politics.

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The groups are coordinated by Marie, in Rio, and Isabela, in São Paulo, and include 12 researchers. The “Gotcha” has similar features to the American “Botometer”. The Indiana University tool is used to identify the involvement of robots on social media for English language content.

Brazilian President Jair Bolsonaro.
Brazilian President Jair Bolsonaro.

Through “Botometer” processing, a study at Oxford University found that 18 percent of content in the US elections in 2016 and 32 percent of posts on Brexit came from bots. Such instances are international references of media manipulation by robots – now far outnumbered by the 55 percent pro-Bolsonaro Tweets.

“A massive use of robots does not necessarily mean that the campaign on social media is poor and needed to be inflated,” explains Dr. Isabela Kalil, author of the study. “The bot does not vote or get sick from covid-19, for instance, but it influences how humans vote and whether or not they take precautions in the face of a pandemic”.

The March 15th acts took place in the first days of the coronavirus outbreak in Brazil. At the time, the Health authorities’ recommendation was to avoid crowding. After calling the demonstrations via WhatsApp, Bolsonaro had discouraged people from taking to the streets on a live broadcast on Facebook. On Sunday, the action took place with a small crowd.

The surprise was the President’s arrival in the middle of the crowd in Brasília. He shook hands with supporters and took selfies. Bolsonaro had returned from the United States days before, in a delegation where twenty people arrived infected with coronavirus. The President says he tested negative for the disease.

If movement on the streets was reduced that day, it exploded on social media. #BolsonaroDay entered the world’s Trending Topics on Twitter, meaning it was one of the ten most talked about subjects around the globe. “As social media were created for interaction between people, there is a subtext that the voice of the people is what you see on Twitter,” says Marie Santini, post-doctorate in Information Science and author of the research. “But social media are prone to a great deal of manipulation.”

Marie explains that, in addition to inflating topics of interest to those who command them, robots are used in Brazilian politics to guide the arguments of militancy, draw the attention of users and even guide the press. “It’s the phenomenon we call kidnapping attention,” says the UFRJ researcher.

Source: Valor Econômico

This article was produced by The Rio Times’ automated AI newsroom. Editorial responsibility: Matthias Camenzind, Publisher and Editor-in-Chief. The Rio Times also runs Ask Rio Times, which answers from 100,000+ of our own articles, the daily Latin America Power Map, and prediction-market odds on elections and markets.. How we use AI · Report an error

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