Have any of you ever traveled to Germany as part of a tour group? [View all]

I've decided to check off one more thing from my bucket list and that is to travel to Germany.

Normally I travel alone, but since I want to tour at least one concentration camp and learn some more about holocaust history I think I would feel better doing it as part of a tour group. To be honest, since I've never been there I wouldn't even know where to begin looking for tours that include holocaust history.

As a gay man I would prefer going as part of a gay tour group, but if that's not possible any tour group would do.

Thanks in advance for any information.