Twitter CEO Jack Dorsey shared tweets from a Russian Troll at least 17 times.

Wall Street Journal:

Investigators and researchers say it is hard to quantify the scope of Russian influence efforts on Twitter and other platforms. But it affected even Twitter Chief Executive Jack Dorsey, who between late-2016 and mid-2017 shared at least 17 tweets from a Russian troll who went by Crystal1Johnson on Twitter, the Journal’s analysis found.

The tweets from the Russian account that Mr. Dorsey shared touched on topics including Bob Marley’s son converting a prison into a place to grow marijuana and former San Francisco 49ers quarterback Colin Kaepernick, who first sparked the anthem controversy to make a statement on the treatment of African-Americans in the U.S..