Your first example isn't about speech. The school had a policy of a white absence day (which is batshit, but whatever) and he expressly violated that as an act of protest and got fired for breaking the rules. He'd been clearly opposed to it from the start and not censored.

Be very careful with that second link, that story was spun like crazy in conservative circles, and even weeks later it's impossible to find an account of what happened from anything other than the lecturer's perspective. I mean, that Free Beacon story is one of the worst examples: find me anywhere in that story that quotes a student or explains what they were upset about. The go to Google News and search for the guy's name, and you find a giant list of stories from conservative outlets (and none from mainstream sources) all with the same odd skew to the reporting. I think the jury is still out about what exactly was offensive, I'm guessing it wasn't just because he read an MLK speech. UCLA has not said anything yet.

The David Shor one is a good example though. Something crazy happened there and no one understands why he was fired.