Jon this is an interesting question. I guess I would feel it helpful to make distinctions between censorship or discrimination, vs. right & wrong, vs. legal and not legal.
I had read that story too, with sadness. Another person getting canned for not being politically correct and for not unequivocally supporting BLM.
For the "right and wrong", as well as legal and not legal, I would say Well....it's their business. They have the legal and even the moral right to only hire people whose views they agree with. There is nothing illegal (I don't think) with an organization such as that to deliberately employ only those who agree with their views, unless it's their religion. I admit I'm not able to say whether another country might have a law restricting this liberty.
Do they have the legal right to censor? I guess they do. Morally? Well that's where it gets muddy for me.
The current climate that is happening, where every person must agree with everything that BLM believes and says, or risk personal and professional condemnation and persecution, and all of the knee-jerk overreactions going on, is something that I deeply disagree with. And it is the sole reason why, approximately 2 weeks ago, for the first time ever, I changed my mind and decided I am voting for Trump in the next election. There are a lot of issues where I part ways with Trump, but I have decided unfortunately they are over-ruled for me by this. This decision was huge for me.
While the station may have had the legal and moral right to fire him because they can choose to hire those whose views they agree with, it's very objectionable behavior and represents a much larger thing happening all across the US and the world right now. If someone doesn't stand up to them, the more liberal voices of over-the-top reactions to all of this will be putting in place horribly unfair amounts of persecution and punishment to anyone who even reasonably disagrees, and my vote is with Trump because he will stand with the rest of us, while still (I believe) trying to put in place some positive change.
Yes, it's censorship and discrimination. The legal, but absolutely reprehensible, kind. Note that in this statement I am not focusing quite as much on Nigel's case itself, because his statements were much more extreme than I would really even agree with, but I am focusing on the broader rapidly building trend that it represents.