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Depends what you mean by "buy support". For example, if we have a conversation and I try to influence you into my way of thinking because it will benefit you, is that buying support?

I have never had a politician try to buy me though. Don't get me wrong however, I know some pretty terrible ones too :)

Any form of tax is a crime imo, there is very few politicians who talk about 0% tax.

Where is the line between tax and slavery is what I usually ask people and they never have a logical answer for me, the only answer I can really see respecting our individual rights is 0% tax.