Or do you have any idea of something funny and highly provocative you could do in a middle class town full of hippies/students
Nuke them from orbit.
I (and others) had Big Macs thrown at us on a May Day march once from an apartment 2 stories up. I threw one back and it went through the window and hit someone, so I felt pretty cool. Almost got arrested but some nice people got in between the cops and me 
Was kinda weird, to think that people had obviously gone out and bought up big at McDs purely to throw at the march...
they probably didnt buy it specifically to throw at the march, probably just an assholish spur of the moment thing.
I think it was specifically for us, they had a hell of a lot....
Why one would throw big macs on may day?
I assume it was the whole "Hey, there's a bunch of anti-capitalists marching, lets throw one of the biggest symbols of capitalism we can think of at them" kind of thing...
Organising a right wing demo is always fun but it is a lot of organising and you have to have a good number of people who can keep serious for hours. Because this year may day is also ascension day so there will be mass and all. The usual demo will be in the morning like mass. Shall we rob a macdonalds and throw big macs at catholic bigots?
Just to clarify in case it wasn't obvious, when I said "one of the biggest symbols of capitalism", I was making guesses as to what was in their minds, not putting my own analysis on the role of Big Macs in capitalist society 
If they'd thrown money I would've been stoked.
What are you up to for May Day beside getting pissed? Or do you have any idea of something funny and highly provocative you could do in a middle class town full of hippies/students who always. A town which always start any social movement in France ( yeah, that's Rennes) and has been recently lacking energy and originality.
I got a job so I can't think anymore.