The photo is dated April 22, 1948 the caption reads:
Entrance to second floor offices of Labor Progressive Party which 500 youths wrecked after breaking up speech by Tim Buck.
Tim Buck, was the leader of the Labour Progressive Party, the LPP was the name that the Communist Party of Canada went by in the 1940’s & 1950’s. A quick google search didn’t reveal anything specific about the Windsor incident, however I suspect that mini-riots like this were common when Tim Buck came to many towns.
This side belonged to Ford’s Furs clothing shop.
This half to Remington Typewriters, look at those great old fixtures!
Both sides were for a long time home to Ye Olde Steakhouse, and today are home to the Pour House.