http://philadelphia.cbslocal.com/2017/09/25/catto-memorial-city-hall/
Here is the key part of this story:
Catto was murdered near 8th and South Streets as he walked home. His killer was Frank Kelly, a white man who was a political operative working for the Democratic party. At the time, African-American men had won the right to vote thanks to the 15th Amendment, which passed in 1869, and their loyalty was to Republicans, the party of Abraham Lincoln.
Here is the key part of this story:
Catto was murdered near 8th and South Streets as he walked home. His killer was Frank Kelly, a white man who was a political operative working for the Democratic party. At the time, African-American men had won the right to vote thanks to the 15th Amendment, which passed in 1869, and their loyalty was to Republicans, the party of Abraham Lincoln.