Sorni mischaracterizes Critical Mass yet again:

One purposely disrupts traffic (****ing off drivers and
engendering bad will), while the other is /part/ of traffic
and looks to promote cooperation.

=v= Bull****. Critical Mass *is* traffic. Indeed, the title
of the first documentary about CM points that out, duh.

One has a political agenda and the other does not.

=v= Oh really? What political agenda is that, precisely? My
observation is that there are as many agendas as participants.

One recruits jerks and the other rejects them.

=v= Again, bull****. Anyone is welcome at Critical Mass.
That "recruits jerks" exactly as, um, traffic does.
_Jym_