It's called "change the station" if you don't like what someone is saying. If there is no market for it, it will go away - as money talks. There's no way government should be involved with trying to mandate free speech and views.
I've found myself often listening to talk radio which is the exact opposite of my views. I find that I learn a lot more that way and it helps me to re-evaluate my opinions and look at things from another viewpoint.
These thoughts are just mine, not right, not wrong, just thoughts. Invest in what you believe in, not what I believe in. Do your research, and invest in the facts.