In his work, Benjamin compared the Baroque to his own era - decadent, devoid of community ethos, obsessed with aesthetics. This was a political-aesthetic statement. In other words, Benjamin's work itself was an allegory of politics. Thus, the transition to political activism comes as no surprise to us. Benjamin was a materialist, but manifestly NON-dialectical.
Dialectical images are imanent in such a transcendental consciousness.
They are not the result of a commodity fetish. That our very capacity to recognize proleptic or anticipatory images is conditioned and biased. The party would have been proud of her.