I don't particularly care for David Cameron as prime minister (although its a sad state of affairs that even as someone who is a Labour supporter like I am would rather him continue as PM than Ed Miliband take over) but yes I have just as much contempt for people who scream "fuck off you cunt" at him, and he's 48 not 65.
To shout and swear at someone is the recourse of the moron.....and it's inappropriate for me to be vitriolic to someone unless they have done something truly loathsome. Wenger hasn't killed your family, he hasn't sacked you from your job, he hasn't trampled on your human rights, he hasn't as far as I'm aware committed any crime. He is arrogant and pompous as you say but I think that of plenty of people I don't shout "fuck off you cunt" at them.