You can get people to sign just about any kind of petition, apparently. There's an amusing video making the rounds, put together by Mark Dice, in which he convinces people on a boardwalk in San Diego to sign a petition for the "city council" to "support an Orwellian police state."
Sometimes he directly mentions the idea of modeling this police state on "Nazi Germany" and it doesn't appear to give anyone any pause at all.
Of course, the video is cut so you never see the full interactions (and, of course you only see the ones he chose to include), or what gets people to agree to sign up in the first place. In most cases, it looks like people have already committed to signing the petition before he goes into the statements about the "Orwellian police state," or "modeled on Nazi Germany," and he does so in a monotone way. But, even then, none of the people shown in the video seem to care much. Obviously, it could be that many others refused to sign or realized what he was up to and we just don't see it. But, beyond being an amusing bit of video, it should remind you how worthless street petitions tend to be.