This is why we colonise space, at least the planets without aliens living there.
Almost every colony ever: gets oppressed and exploited, fights for independence, gains sovereignty, becomes either a tense ally or a hostile rival to their former empire
Earthlings: “maybe we should colonize space”
A planet where no conservatives are allowed. We put them on rockets to the Conservatives only planet.
So you want to send those undesireable people somewhere else? Maybe to conserve your way of living?
If by undesirable you mean I desire instead to keep living, and by conserve my way of living you mean I just get to continue breathing - then yes. They try to kill me, there’s no moral limit on what I can rightfully do in return if they don’t succeed. Including rocket them off to planet conservative before they get another shot.