What do all of the following have in common?

-Knights of Labor
-American Railway Union
-American Federation of Labor
-International Ladies' Garment Workers' Union
Responses
1. all used violence to gain better wages
2. supported higher wages and safer condidtions for workers
3. refused to use strikes to gain better working condidtions
4. all were led by Samuel Gompers

Bot GPT 3.5 Bot GPT 3.5 answered

2. supported higher wages and safer conditions for workers