This is not a SFW instance. NSFW communities will be tagged, and efforts will be made to keep SFW communities clean, but proceed at your own comfort level.
Regarding the national anthem, you should look up a translation of the French national anthem. And it probably isn’t the most metal/aggressive national anthem out there, since it’s one of the very few I even know.
Edit: I couldn’t help but add this snippet
Grab your weapons, citizens!
Form your battalions!
Let us march! Let us march!
May impure blood
Water our fields!
Pop tarts are aggressive…?
Regarding the national anthem, you should look up a translation of the French national anthem. And it probably isn’t the most metal/aggressive national anthem out there, since it’s one of the very few I even know.
Edit: I couldn’t help but add this snippet
Full lyric translation: https://www.thoughtco.com/la-marseillaise-frances-national-anthem-4080565