Question: Edwin Forrest's feud with William Charles Macready was the cause of what event that occurred on May 10, 1849, in Manhattan?
Related documents: [0]  [DOC] Edwin Forrest (March 9, 1806 – December 12, 1872) was a prominent nineteenth-century American Shakespearean actor. His feud with the British actor William Charles Macready was the cause of the deadly Astor Place Riot of 1849. [END] 
[1]  [DOC] The Astor Place Riot occurred on May 10, 1849, at the now-demolished Astor Opera House in Manhattan, New York City and left at least 25 dead and more than 120 injured. It was the deadliest to that date of a number of civic disturbances in New York City which generally pitted immigrants and nativists against each other, or together against the upper classes who controlled the city's police and the state militia. [END] 
Answer: 
The Astor Place Riot
The Astor Place Riot