How does the sacco and vanzetti case demonstrate the mindset of the red scare?

It demonstrates it because they were sentenced to an electric chair even though the evidence and the case was highly controversial. The evidence was inconsistent and it was a murder and a robbery that they committed which under normal circumstances would not have such a severe punishment. However, they were considered to be anarchy radicals and extremists in so the red scare helped the case punish them much more severely.

Treated as a slave is cruel and harsh