Quote of the DayVirginia Postrel:
Information is the enemy both of out-of-control government and of paranoia. Vigorous, open dissent is a powerful check on government excesses--and an important, peaceful outlet for citizen grievances.

Declaring those grievances illegitimate, and those citizens the philosophical allies of murderers, may make a weak president feel strong. But it won't make the grievances go away. And it won't make sleazy rhetoric any less sleazy.