I believe that the answer to the question provided above is the Harlem culture lead to civil rights movement since Harlem renaissance is the rise of the negros which are the most affected by racism.
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Others are unable to answer your question if you do not give them more information regarding what you want to be answered. My suggestion is to edit your question so it can be answered properly.
Adds info and further explains… that’s the one mate
"During the rock concert" would be the subject, as "an amplifier exploded on stage" would be the predicate.