When information started to come out that the shooter in Dayton wasn't a right-wing extremist worried about the invasion and quotes of immigrants, and that his politics might have been to the left, the right-wing propagandists who were running interference for Trump a day earlier and saying that just because he loved Trump doesn't mean they're guilty for the shooting immediately flipped the script and started saying that this was an Antifa lunatic and started blaming all leftists. The surface level details were in their favor on this one, so they did what they always did, attack.