Griefers joined my listed server and spammed racial slurs and anti-Semitic words

[infamousdoge]

 Hi, I had an old server, back when I started using Minehut, that was griefed with pretty rude and inappropriate content, ranging from building swastikas and writing the n word on signs. I looked into the player data, and found that these people had joined, besides people I knew:
austinpieck
JoeCrimson
unhtony
mindplecks
N1993R_sandwich
Lamars_Black_Ass
P0PULAR

Just so you know, these were all the UUID's in the player data  folder that I did not know. The stuff they wrote was pretty upsetting, and I was wondering if a moderator could do anything about it. This ruins the Minehut community. Also, I don't want to get a person that had no affiliation with the other people to get in trouble, like any of the people that had joined before the griefers joined. I think one or two may have been innocent, but I think the majority were griefers. Please let me know what actions, if any, will be taken. Thanks.