Why do the refs never call fouls when Goran Dragic gets fouled?

[72-10]

[72-10]

I've seen defenders literally kick their leg out and trip Dragic on his way up to the basket and he doesn't get the call for the free throws. In plain view of the ref.

[superduper]

Because he's black.

[72-10]

Actually, Goran Dragic is white.

[MrFonzworth]

He slapped Simmons like he was his bottom bitch in the playoffs and only got hit with a common foul. I don't wanna hear it. If Lin did that he would be shot on the spot.