Illuminati

[DarkEternity]

Event wise, they work with their local charities, allow health centers to use their property to host Blood drives, participate in local holiday festivities and fairs, and host several fundraisers for different things throughout the year.

Organization wise, they meet a once or twice a month to discuss community happenings and discuss voting how to take care of bills, admitting new members, Discussing activities to hold and so on. Nothing hidden or creepy, and I actually have a website for you to look at that explains in full details everything the Free Masons do :

What Goes On At Masonic Meetings?

I think once you see that it may change your viewpoint on it. check out the whole site. Its well informed and provides answers to just about all your questions.

EDIT: Also, what you discribed as far as the creepy stuff and whatnot, you may be talking about what is called Fake Mansonry as discribed here:

Fake masonry