I am reading about the late 19th century French anarchists, especially the bomb thrower Emile Henry. He would definitely have blown up his local McDonald’s. Since the Soviet Union was founded, the dominant leftist ideology has been Marxism-Leninism, with a theory of the state, foreign policy and a theory of tactical support for nationalist or radical movements around the world.
What we see today is the non-Marxist-Leninist left, the people who agree with the ‘anarcho-communist’ critique of the Soviet Union, but support a mixed bag of causes united only by a hatred of government-corporate business interests. The anti-globalisation campaigns of the 1890s resemble the current crop, except that they had more guts and were more likely to be literate. Other interest groups are attempting to cash in: the trade unions and public sector welfare interests. This gives an incoherent feel to the protests: e.g. simultaneously demanding an end to money and increases in the minimum wage.
The strategy for combating Marxism-Leninism isn’t necessarily the right one for opposing “non-Marxism-Leninism”. Cruise missile bases in South East England won’t help. Spook operations contracted out by a consortium of big business and security agencies to pro-capitalist radicals are probably worth reactivating 
