What a jerky reaction from Guardiola, for waving off Caleb Porter, the MLS All Star's coach, who has been trying to shake hands with Guardiola after the game. Acting like a little girl who got his feelings hurt.
I understand he didn't want his Bayern players to be hurt, and there were two rough challenges against Shaqiri and Schweinsteiger that pissed him off, but waving Porter off and directing his Bayern coaching staff not to shake hands with him is just too childish.
This is football. If you don't want to accept the possibilities of fouls like that, don't come over to the US to play.