If I were to take a guess, it's because they believe they can control public opinion and either keep the filthy masses in line or, if the peons ever did break out the guillotine, they'd be the ones leading the mob and telling them who and what they should be angry at. They believe they're too smart for the masses to ever figure out, too charismatic for them to ever be angry at. The idea that they could be the target of violence is something that never crosses their minds, particularly the young ones who've never actually done any over-seas reporting in areas where your only guarantee for safety is your military escort, and that's if they don't get blown up with IEDs or killed by other booby-traps, like a kid carrying a grenade in a shoe-box.