It protects from the tyranny of the majority.They went after Clinton for the Whitewater scandal. But they couldn't get him for that.
So they found something else.
The irony is it was a Independent Counsel that went after him, something a Trump judge just said is unconstitutional (we all know she's just doing it to stall for time)...
Filibustering is just stupid. It's a crap way of getting power.
Oh, and the Democrats did it first.