Those incidents are private-sector actions which have nothing to do with the guarantee of "free speech." Free speech means the government can't shut you up. Moreover, anyone who's fired for their ethnicity or has grounds for a significant lawsuit.

Free speech allowed students at Harvard, for example, to demonstrate against Barack Obama a few days ago, chanting "Barry, Barry, you can't hide! We charge you with genocide!" because his administration had supported Israel.


https://www.thecrimson.com/article/2023/10/19/harvard-die-in-palestine/
Meanwhile, at a different level:

https://abcnews.go.com/Politics/tlaib-refuses-apologize-blaming-israel-gaza-hospital-blast/story?id=104085727

Constitutionally guaranteed free speech is not under threat in the United States.