Final answer:
Besides New York City, other northern cities like Springfield, Illinois, and Detroit, Michigan experienced antiblack riots. Harlem, also in New York, witnessed riots in the 1960s.
Step-by-step explanation:
Besides New York City, there were several other northern cities that experienced antiblack riots. One notable example is the Springfield Riot in Illinois, which was initiated when authorities refused to hand over a black prisoner to a white mob. This sparked a violent outbreak as thousands of whites attacked black businesses and homes. Another city with notable racial violence was Detroit, where racial tensions exploded in 1943 leading to the deaths of nine whites and twenty-five blacks following altercations in the city. Additionally, the racial climate of the 1960s saw Harlem experience major riots as well, with the Harlem riot of 1964 resulting in violence and destruction.