Action by striking workers on the picket and action by a handful of self-appointed revolutionaries who presume to act on their behalf is the difference.
So what's that been achieving lately? (Since we're apparently following the stupid line of mutually exclusive activity).
Also, I couldn't give two fucks about 'alienating the working class'. Fuck man, the working class alienates the working class most of the time. You act like its some kind of rock solid homogeneous body of masculine oiled men with big hammers and flat caps standing outside factory gates chewing tobacco and muttering 'those damn petit-bourgeois students and their alienating camera-smashing, I sure love me some CCTV! Don't you, comrade stakhnov?'. Strikes alienate the working class, marches alienate the working class, waving a placard and sending a letter to the daily mail alienate the working class and guess what, Capital alienates as well. Besides, most proles probably cheer on a CCTV camera being smashed or at the very least don't give two fucks (unless they're hella conservative old farty union hacks).
But whatever I guess this just doesn't 'build the community support' and doesn't 'strengthen the labor movement' and other such tried and true roads to communism.
"Of Man's first disobedience, and the fruit
Of that forbidden tree..."
- John Milton -
"The place of the worst barbarism is that modern forest that makes use of us, this forest of chimneys and bayonets, machines and weapons, of strange inanimate beasts that feed on human flesh"
- Amadeo Bordiga