However I do not support unrestricted harassment. I'm a guy. I have a dick between my legs. I think it's easy to forget that if you DON'T have a dick between your legs, you often times are verbally abused, followed, and otherwise harassed, even if you're pre-pubescent.
It's all fine and dandy to say "If I don't support someone's speech, I'll just ignore it!" until a person twice your size is following you down a dark street at night talking about the sexual things they want to do to your body.
Someone talking about a political opinion making me feel "unsafe" is a stretch, and I wish people wouldn't confuse exchange of ideas with safety. However, someone following me around harassing me and verbally sexually abusing me isn't free fucking speech. It's harassment.
Granted, I don't know what this law will do about it, because I'm assuming harassment is illegal already in France, but I just wanted to point out that the speech you are arguing in defense of is not an exchange of ideas, it's threatening and bordering on sexual violence. I also want to point out that unless it has happened to you personally, it's easy to say things like "just ignore it."