Labels such as liberal or conservatives etc are completely irrelevant in this context - there is an attitude of mind which is open to the eugenicist agenda which can crop up in just about every part of the political spectrum, far left, far right and dead centre. Can and does.

Just because we may agree with some people or some group on most things, it's wise to be aware that there may be important matters on which we do not agree. It's never a good idea to buy a package of policies unexamined.