When I was a kid they told us: your freedom ends where somebody’s freedom starts. I still think it is valid and insightful.

Every “freedom” has two sides. Positive and negative freedom. You don’t have the freedom to dump nasty chemicals into bodies of water (lack of positive freedom), but I have the freedom to not have carcinogens in my drinking water (negative freedom). Some examples are clear cut, in the sense that we as a society surely all agree on where the line should be between positive and negative, but all examples need to be discussed on an individual basis, because they’re all different in terms of where we draw the line. But you can’t use the slippery slope argument here, because the slope works in the other direction too for any given example, the more positive freedom you have, the less negative freedom you have.