you've never heard of righteous indignation, haven't you?
it tell a lot about humanity that greatest revolutions in the world like french revolution and its consequences were possible just because some people had to be killed.
without the french revolution we would not have dismantled the absolute monarchy in europe and gained universal human rights.
british suffragettes are the reason women can vote today. did they get the women's right to vote by asking nicely? no. they were domestic terrorists.
so you can probably make your own conclusions. you can't change status quo with kindness.
being mean is the bare minimum.