Impeachment is not going to happen progressives so you need to go all violence. That’s the message they’re putting out.
With the republican controlled legislative branch being as ineffective as we all thought it would be, there is a significant chance they will lose control of the House next election (actually they’ve lost effective control of the senate now and the House can’t get anything done).
If that happens, Trump will be impeached by the House and have to face a trial in the Senate where surely he can find 34 votes from republicans to stay in office (of course republicans never miss an opportunity to bend over for dems so who knows, Trump my be convicted too).