Before revision: 3M English tweets about COVID-19 and provide early evidence of the use of bots to promote political conspiracies in the US, but also as a tool to enable participatory activism to surface information that could otherwise be censored in China .
After revision: 3M English tweets about COVID-19 and provide early evidence of the use of bots to promote political conspiracies in the United States, in stark contrast with humans who focus on public health concerns .