It was a big ol' march. The first protest I went to was the Stop the War march in 2003 and it was similarly large. That one, all the ones in between, and probably this one, have been pretty much completely ignored. I think it is true that only direct action brings meaningful change. But movement building is helpful. (Also.. my preference would be to revoke article 50.)
@neil Why do you reject democracy as a means of deciding an issue?
If remain had won, what would you think of leavers behaving as the anti-democracy remainer rump have done?
From here it seems to be the old communist 'ends justifies the means' thing - the rump reject everything that doesn't get their way and accept anything that does.
Democracy... only if it gives the 'right answer'.
Leavers spent decades working and winning via our political system.