Oh, man. It's like 2008 all over again. Talking Points Memo says:

The words "Muslim lier," with "liar" misspelled, were spray painted in red on a large banner at President Obama's campaign headquarters in Des Moines, Iowa, according to the Des Moines Register. The vandalism occured sometime between Wednesday night and Thursday morning, per the local police.

Now we just need someone to carve a backwards "B" into their own face and we'll be in full nostalgia mode.