Only in America could taxation be viewed as being a greater evil than slavery and crucifixions.
Well, I wouldn't say only, and generalizing other people isn't a model of correctness, but historically, the United States was formed from outrage over taxes that paid for the defense of the United States, yet they kept slavery intact. Chances are, if this game were released to a public audience with the mindset possibilies of revolutionary Americans, many people would side with Caesar's Legion for a hatred of taxes and acceptance of slavery. I can guarantee that isn't the case with most modern Americans, but if anyone from any part of the modern world were to be placed into New Vegas, enslaving someone else over being taxed might be a tempting choice. Picture this. You're in a wasteland where food, drink, medicine, and, especially, luxuries are not guaranteed parts of existence. Would you rather be taxed, of have someone else perform work for you instead? Would you rather bear a financial burden or have someone work for you? With the first choice, you may get something back, but you have to pay something. With the second choice, you don't have to pay anything other than the supplies the slave need, which he/she may be working to produce, and you still get something.