I've hardly seen any games, but I've decided that, if I have to take sides, I'll do it by which teams have been dirty, which have thrown themselves to the ground and faked injury, and which have been beneficiaries of laughably biased refereeing.
So: down with Portugal! (Boo Pepe! Winner of the Golden Speedos for Best Dive. Boo Ronaldo!)
Down with Brazil! (Boo Neymar!)
Down with Switzerland! (wrestle your man to the ground = no penalty)
Down with Costa Rica! (Mere contact = penalty; pulling to the ground (twice) = no penalty)
Who'm I missing?
EDIT: Two minutes into the game. Guy elbows England player in the head in the penalty area, goes down holding his own head, referee gives Panama free kick.
Boo Panama! Boo soccer!