What crimes did American gangsters cause in the 1920's?

Answer:
they were a cause for many problems in the 1920's, a perfect aphorism for roaring 20's.
They commited crimes like: bootlegging, prostitution, robber, smuggling, and etc.
there would be constant criminal acts of crimes between the North and South side
it is better known as the war between al Capone and bugs moran
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