No, it isn't, my dude. That comparison is not only ridiculous but offensive.

With slavery, the slaves don't get a voice. They can't choose to not be slaves. With taxation in a democracy you can choose to run for office and change the laws yourself if you really wanted. Or you can just work to get someone else who better represents your views elected.

With racial segregation, again, the victims don't get a voice. They are prevented from voting, they are intimidated and oppressed.

You are not being oppressed because we've chosen to pay taxes to fix the roads and take care of the elderly.

Not if slaves/segregated are minority.