[sndman]

Indeed, it is a thing, and has been for a long time. But labeling free speech as antisemitic is now quite common.

Here in the US, there is plenty of legislation at the state level that requires individuals and businesses sign agreements in order to gain employment or secure funding (advertisement, in the case of newspapers). For example, the law in Texas prevents an individual from being employed as a teacher (or contractor) if they support boycotts of Israeli companies. I'm not arguing for or against these boycotts but legislation preventing boycotts is now a condition of employment in some states.

There was a good documentary about this recently in DOC NYC: https://www.docnyc.net/film/boycott/