What pisses you off in Battlefield 3?

[Coffee Jr]

people that use sniper rifle with iron sights or holo scopes in hard core to abuse the one shot kill. snipers that sit up on the highest building or structure they can just sniping and not capping or anything the whole game.when people dont die even though you shot them with a full clip or 50 rounds or more from an lmg up close.people who teamkill for vehicles.