1880 Garret Rock May Day riot

The 1880 Garret Rock May Day riot or 1880 Garret Mountain May Day riot was the “most serious” civil disorder that occurred in the New Jersey region during the 19th century.

Source: Wikipedia DBpedia

What is 1880 Garret Rock May Day riot subject of?

1880 Garret Rock May Day riot is subject of Riots and civil disorder in New Jersey and 1880 riots.