When Roseanne Barr went after Parkland student David Hogg

Roseanne Barr lost her show today over a racist Twitter post about Valerie Jarrett, the former Obama official, and it brought up — again — her penchant for spreading conspiracy theories, including one about Parkland survivor David Hogg.

In March, Barr retweeted a photo of Hogg and wrote "NAZI SALUTE." She later claimed the photo of Hogg, who raised a fist at the March for Our Lives in Washington, was doctored.

Today, ABC pulled the plug on the show. Barr said she was sorry and that she was leaving Twitter.

Hogg and other Parkland students have been targets for their vocal calls for stricter gun laws. In February, an aide to a Florida legislator was fired after calling Hogg a "crisis actor."

A legislative aide in New York was also fired after comparing Hogg's raised fist to a Nazi salute.