Ah, now you see why the accusations backfire (if I may dare to use that word): the occasion has been created for conservatives to list every violent-sounding thing any liberals or lefties have ever said about anything.
Knock yourselves out.
If I may use the expression.
AND: Michelle Malkin is rising to the occasion, compiling the list. I'll just contribute this poster I photographed in the window of a shop here in 2004: