Disagreements and healthy debate is one thing; wishing specific ill-will is another. I have heard talk on both sides that make me cringe. Still, as much as it bothers me I would not give up my right to Freedom of Speech just because the speech might be offensive to someone. And while I may not agree with what's being said, I firmly defend the right to say it. Same thing goes with the right to bear arms. I don't like handguns, but I defend your right to own one.
I wonder what Mark Twain would say. The Adventures of Huckleberry Finn was recently 'cleaned up' of any words that the reader might find to be offensive, such as the 'N' word and a reference to Native Americans that was popular back in the 1800's. I don't know if Mark Twain was a bigot; I'd like to think he was not, but was only spinning a yarn. One thing is certain; there is no way to learn from the mistakes of our past if we sanitize it. I personally do not care for the 'N' word, especially the way it is bandied about these days, but rap artists have every right to include the word in their lyrics.
I can think of bigger tragedies of the Tucson shooting of more importance than the power of words. One would be the loss of so many lives; a judge, a nine-year-old born on 9-11, a man protecting his wife, the horrific shooting and wounding of so many innocent people. While not defending his actions, another would be that a young adult, living in his parents' home, could be told to leave school because of his disturbing behavior and not get any treatment for the demons that were haunting him.
It is sticks and stones that break our bones, and it's not the words that wield the weapons — it's the people behind them.