I'm not a fan of either Lewis or Felipe, but to be honest both drivers deserved a drive through penalty (not only Felipe). As Martin Brundle said, that corner is "one at a time only".
I can blame both drivers for that incident: Lewis for forcing a pass in a very tight spot and Felipe for not backing down (if he indeed saw Lewis near him, tho where the hell were he was supposed to go? outside the track or directly into the bumpers?)
Screw it, the more I look at the replays the more I'm inclined into blaming Lewis for this incident, even if Felipe leaved some room for him, they would still eventually collide in the corner middle/exit spot. Why ? He was on the dirty line trying to brake from ~200Km/h (with his wheels filled with dust) forcing him to have a wide corner exit or even leave the track (guess where Felipe would be?)
My opinion is that Lewis takes so many unnecessary risks too often and it shows

Also David and Martin were so funny and sarcastic "Martin: Drive through penalty for car 6 ... David: Exactly as we predicted it is.. Martin: It is..". Clearly they didn't agreed with stewards decision

(and both aren't Joe&Abe from street corner, they are ex F1 drivers with impressive experience and accomplishments) ... even so at some point Martin said : "What could Massa have done ?!"