Oh please, the Dixie Chicks only got "censored" because the country stations didn't want to lose listeners.
Bruce Springsteen & Bon Jovi pretty much say the same things, yet the demographics of rock radio is different than country. Ditto for Green Day and Rage Against the Machine on "Modern Rock" stations.
Stations tailor their music to their audience.
OTOH, I didn't hear many complaints about some people boycotting Ted Nugent's music for his recent comments. Funny how it only goes one way...