Governments may have the capacity to flood social media with fake news, but little is known
about the use of flooding by ordinary voters. In this work, we identify 2107 registered US …

The social media platforms of the twenty-first century have an enormous role in regulating
speech in the USA and worldwide. However, there has been little research on platform-wide …

The murder of George Floyd by police in May 2020 sparked international protests and
brought unparalleled levels of attention to the Black Lives Matter movement. As we show, his …

The COVID-19 pandemic caused high uncertainty regarding appropriate treatments and
public policy reactions. This uncertainty provided a perfect breeding ground for spreading …

In the absence of clear, consistent guidelines about the COVID-19 pandemic in the United
States, many people use social media to learn about the virus, public health directives …

The internet is often viewed as the source of a myriad of benefits and harms. However, there
are problems with using this notion of “the internet” and other high-level concepts to explain …

We analyze social media activity during one of the largest protest mobilizations in US history
to examine ideological asymmetries in the posting of news content. Using an unprecedented …

Twitter users signal social identity in their profile descriptions, or bios, in a number of
important but complex ways that are not well-captured by existing characterizations of how …

Following the 2020 general election, Republican elected officials, including then-President
Donald Trump, promoted conspiracy theories claiming that Joe Biden's close victory in …

Using a novel dataset of 590M messages by 21M users, we present the first large-scale
examination of the behavior of likely Bernie supporters on Twitter during the 2020 US …