As others have mentioned, the Las Vegas shooter is one recent example. Congressman being shot down on a baseball field. Dismissing facts by calling it "rambling" doesn't make it any less true.
Then what do you intend to contribute by just saying yes? The congressman is a totally fair example IMO, even though he's technically not in the scope of my question. He was thoroughly covered in the news, however. Las Vegas isn't really a good example in my mind as I haven't seen any credible sources indicating it was a left wing attack or otherwise politically motivated. Either way, he too was obviously covered by the media.
You asked a question, and I gave you the answer. If you choose the believe the far left is harmless and has never killed/hurt anyone, there's nothing I can do to stop you. Enjoy your day.