I told my husband I would stop looking at Twitter since it upsets me so I'm handcuffed to find specific proof there. But, I was primarily referring to the list tweet where AOC mentioned gathering republicans who worked for Trump. There have been other similar sentiments expressed by her to punish people over time; she has an activist side which can get aggressive for a Congresswoman.
To be fair AOC isn't the worse I've seen as far as Twitter threats. The worst I've seen is the guy who acted like the controversial professional Mike Adams's suicide was good who is currently a North Carolina professor. Also, there were tweets against Rand Paul which were violent after he got attacked by a neighbor. There have also been tweets for years mostly by random accounts threatening Trump; Gab has organized all the data.
Can you provide an example of a violent statement posted on Twitter by AOC?