What effects did the haymarket riot have on union membership?

The effects that the Haymarket had cause on the union membership are the following;

-          The union has lost its members

-          They were given a negative image

-          There was a presence of immigration because of the violence that has been pursued

-          The union has been hurt or destroyed

i think it was   tsar alexander ii

this isn't a question and if you're going to list things be kind and use commas.