Aeneas Williams -- GOOD PEOPLE ARE UNITING IN FERGUSON ... To Rebuild the City

It's not all chaos and violence in Ferguson -- there are scores of good people hitting the streets to help repair and rebuild after last night's unrest ... and NFL legend Aeneas Williams is leading the charge.

We spoke with the Hall of Famer on "TMZ Hollywood Sports" ... and he told us that people from all walks of life, all races, all religions were joining him as he helped to board up windows, fix buildings and help the small business owners who were hit.

"I cant overemphasize ... so many volunteers that were out there ... and it was COLD this morning ... but it did not matter because the warmth was coming from inside each and every one of us."

Aeneas says he's working with groups to help make sure there's no repeat performance of the destruction tonight ... but is calling on authorities to step up and keep the peace.