There are certainly pros and cons for everything, I'll freely admit that, but there are pros and historical as well as cultural reasons, I have studied my constitution, deeply (probably what I've studied more in my degree) and I understand the reasons for every article. I also understand that prohibiting racist and fascist associations is an exception, no other group is illegal - In fact even nationalist groups are allowed, as long as they're not fascist and [openly] racist - And there are many slightly racist stuff you can say, like "I think white people should organize and put interests of the nation above immigrants". In fact, a guy (far right) was arrested after killing several black people and he admitted he thought all of portugal's problems are caused by black immigrants - It didn't add any charges, so I guess it's not that restricted to not be racist.
Whoever fights monsters should see to it that in the process he does not become a monster. And if you gaze long enough into an abyss, the abyss will gaze back into you