my cards get mucked, standard?

[popeye18]

So last night im playing at this game, more like a club than a home game. First the table is one of those with the wood around the rim for chip stacks. I hate putting my cards on that cause its so hard to lift them up to look at them so i keep them out front on the felt. Im utg and make a raise. There are like 4 callers and then the bb mucks. when he does he throws them into my cards. The dealer says that my hand is mucked. Im kinda shocked as i had kk and never had this happen to me before.

I just decided to let it go as most of the players agreed that my hand was mucked and i needed to keep a chip on top or place them closer to me. Is this standard?