I don't know the law in Portugal but I will assume the principles are similar to other western European countries.

If you have book that are actually banned in these countries, I don't think many people will call it awesome.

Books are typically banned for:

- copyright: not really a ban, but the copyright holder simply doesn't want it to be published the way you want it to be, doing it anyway is just piracy. It can be seen as "brave" if the copyright owner is an asshole, but doing that to authors you support is not great.

- hate speech: Germany for instance bans most Nazi stuff, whether or not it is a good thing is debatable, but in any case, what do you think the political message would be if you opened a Nazi library. Most other European countries have similar laws to some degree.

- porn: Need I say more? Special mention to child porn, which is super-banned, and definitely not awesome.

- libel: some people hide behind defamation laws to avoid criticism, but in most cases, these are actual lies and you don't want that.

I don't know of any banned book in Europe that anyone "woke" (for a lack of a better term) would want to put forward.