What challenges did progressives face in enacting reforms, and what were some ways modern reformers could avoid the same problems?

The time period of progressivism was the period when certain reforms were formed in the whole United States and the problems they mostly tried to deal with were related to urbanization, industrialization, corruption of political leader.

But there were certain problems they could not deal were related to the problem among races, classes, discrimination and problem of tribe of African-American. But the reformers of today try to deal with problems of class and race by forming laws and rights for their betterment.