A) freedom of speech is the most essential freedom (hence, "first" amendment), so I'm not broadening the discussion too much, am I? (aka, slippery slope argument is not always a fallacy)
B) I'm glad that you brought up Chicago, since it's run by leftists and anti-gun politicians, just like every other high crime city in the US and Europe; in fact, just like pretty much every high crime dump in the world is run by leftists. It used to be easy enough to dismiss such silly arguments by saying "Chicago and the rest of Illinois has some of the toughest gun laws", but leftists have a fallacious argument for everything. Fortunately, the leftists' favorite argument of "Chicago's gun crime is caused by the 2nd amendment and the ability to bring guns across state line, etc." doesn't last very long when you consider that the states with the most gun freedom in the US have some of the lowest crime rates (Idaho, Vermont, etc.). Or, are you prepared to offer a theory (other than "cultural differences" - last I checked murder is not an acceptable "culture", or is that the next wave of leftism?) about why people in Idaho and Vermont aren't murdering people due to their nearly unrestricted access to guns and legal ability to carry them in public?