The haymarket riot of 1886 had a major influence on American attitudes toward

Anarchist.

Explanation:

"The Riot was consist of Anarchist and anti capitalist who believed that American capitalist system should be dismantled because it hurt workers the riot leads to a lot of death, wounds, and destruction, changing American attitudes toward anarchist." is what i found :)

answer; i believe the correct answer is benjamin harrison;

the answer is chorales.