The problem is that they did not use the law, they abused it, twisted it, and tried to bend it to suit their purposes, not its stated intent.
They redefined words and intents to hammer the courts into a tool of their desire, rather than a fair and impartial device for all.
Placed in the same situation, where an opponent could distort the law to their ends and use that against the liberals, the liberals would go down like wheat in a hailstorm.
As far as 'convincing others' of their positions on issues, only through dumbing down and censoring the voices of dissent can they make their positions seem reasonable, creating a bubble of theory that has no relationship to the natural world, because its basic axioms are flawed.