Because the Left is either disinclined or incapable of maintaining civility in any debate over social or political ideals, they always seem to be projecting their anger onto Conservatives. The Right is labled “hateful” – yet it’s the Left that’s actually displaying more and more of that emotion. As Andrew Klavan points out in Reality Time:
 

…the leftists of the so-called mainstream media regularly twist themselves into knots to make conservative speech sound hateful while ignoring the routine and open hatefulness that permeates the speech on their side and theirs alone.

Their ugliness seems to be escalating day by day, and with it the dishonesty, distortions, and bullying anger of their mainstream-media fellow travelers.

 
Klavan speculates that the Left’s tantrums are intensifying due to their frustration with “the One”, on whom they’d staked all their “hope”. And that they’re increasingly angry at the failure of Obamatopia to materialize.
 
Unfortunately for the civil society they express that rage by lashing out at us.
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On the plus side, Bill Mahers’ further decline into filth will save me $15.00 a month; I’m finally cancelling our HBO subscription!