Guys this is football, players get caught up in the moment, i play football myself and i know how its like being caught up and angry in a certain game.
However not shaking Piqués hand just seems like hes being a sore loser but we don't know what they said to each other.
For example look at Xabi alonso, Ramos and sometimes Casillas, when they play for Real against us they seem very hostile ofc. but when they play with Xavi, Iniesta, Villa and so on with Spain they are good friends.
That being said, Marcelo and Ramos are filthy cunts.