The strike alluded to was a transportation workers strike in '32 if
memory serves. See, "The Communist Movement, " by Fernando Claudin, a
Spanish Communist, published by Monthly Review Press in the late 70's. The
NSDAP aligned "labor union" and the KPD struck against a SPD run city.
http://lists.econ.utah.edu/pipermail/leninist-international/2001-
January/009041.html
> ...Writing in The Guardian on June 3 Foot, by seeking to explain the
theoretical underpinning, went out of his way to endorse this line of
thinking. "Though their combined vote and their influence in the country
was
substantially greater than those of the Nazis, both sides - especially the
communists - rigidly refused to form a united front against the fascists.
The communists, who at one stage were getting 6 million votes, renamed the
social democrats 'social fascists'. So great was the sectarian divide in
those crucial months before the deluge that the communists preferred even
to
link up and stage strikes with the fascists rather than campaign in the
country and the factories for a unified force against fascism. 'After
Hitler, our turn' was the boast of communist leader Ernest Thalmann. After
Hitler as it happened communists and social democrats were at last united -
in the concentration camps."
-- Michael Pugliese