File talk:Communists attacking a parade of Ukrainians in Chicago. 17.12.1933.jpg

What is the source of this photograph? The caption contains no clarity, and describes a situation that the picture itself does not (clearly) present. I'm not sure this pic should be considered evidence of anything, as the incident has no linked context, creator or source.

This photograph could be of anything, and until its source, photographer and context are adequately documented, it should be not be included as a historical reference.