On matters where it is difficult or impossible to pin the blame for their policies' failures on conservatives, the fallback position has been to hurl a slur at anyone pointing out the obvious failure....The left's never-ending use of these worn-out attacks on the character and motivations of those who disagree with them has caused them to lose their effect....At the ground level, since liberals have lost the ability to win any and every political discussion by hurling a slur, they are simply resorting to the next level in political interaction: violence and physical intimidation.