Probably because it's expected, it's happening "somewhere else" to "minorities," and the people being racist aren't always using slurs. Same reason news outlets don't really report on crime in known high-crime areas. Many people do not understand that these issues also affect them because it normalizes racist behavior, which in turn hurts the economy.
There's many but the classic action ones, for me, are The Rock, Con Air, Patriot Games, The Sum of All Fears, Air Force One, Starship Troopers, Pacific Rim, and Die Hard/er.
On the lighter side, I'll always watch Forgetting Sarah Marshall, Superbad, Anchorman, This is the End, Hot Tub Time Machine, Pirates of the Caribbean, Blazing Saddles, Robin Hood: Men in Tights, and The Emperor's New Groove.