Reminds me of that standup from that CK. Basically, being white is amazing and if youre white and dont agree then something is wrong with you.
You can go to any point in the past and be fine!!! The future, on the other hand...
Considering that you'd be killed at many points in the past for being white, that's fairly doubtful. Even during colonial America, being white was no guarantee of anything considering that native tribes weren't always appreciative of people "appropriating" land. Broadly speaking, you'd be treated pretty awfully in any civilization where whites weren't the majority -- ie, the same as any other race.