If you'd like to make the whole place nicer, then loving do so instead of changing your avatars and posting slogans.
Protect the newbie in distress, stand up for people, stop being a bunch of sheep with similar avatars. DO SOMETHING. You don't need a clan to glorify it, just spread good values and they will take hold.
Unfortunately, it appears that
You're still glorifying the idea with a clan.
I should clarify. Kind, well rounded people are intimidating. Unless they have a short fuse, making them angry is fruitless and so inspire kind responses. They get points across without being showy about it, and thus don't inspire backlash.
People are, however, overly willing to work against an organized movement such as this. Reminding people to be nice won't make them any nicer. I guess the important thing to do is to not show weakness.
Also, would it kill you guys to talk about blockland related stuff? We hardly ever do that anymore.