All the protesters need to do...
Is bare their ankles..
The sheer sight of such an abominable sight of pure carnality would surely cause the MP's in question to faint, spark riots, mayhem, and general civil unrest of the insubordinate kind!
I'd use the joke icon, but it seems the british neo-Victorians are serious about this kind of stuff, and collectively the normal british have failed at stopping this kind of nonsense.