It doesn't take a "PC Leftist" to want to see armed agents of the State made to respect their employers -- the American people. This past decade has seen an explosion of SWATs. I think even the Parks Dept has a SWAT division. Gonzo cops shot an elderly Malibu man suspected of growing pot (he wasn't). And yes, there's WACO, and the LAPD's Ramparts Division, and many other police/FBI scandals.
The Secret Service are servants of the people -- and should be humble, respectful, and polite in the presence of the American people (yes, even Arab and Muslim Americans). All True Conservatives, who appreciate limited govt, should understand that.