To be honest, I never saw the Dollars as a real gang.
[please don´t punch me for this] lol
And the whole thing with "the world isn´t as bad as you think" or whatever is rather wiffle waffle, for nobody is really able to make the world a better place.
When I joined first, I saw the Dollars as pure fandom.
Nowadays, I rather see it as a community, where you can meet interesting people. Comparable to
>>5.
I don´t think you need a purpose to be a Dollar.