As much as anything they fight the carry laws because they know the mayhem they predict will never happen so it shreds their cause. In Mi they squealed, stomped their feet, took to the airwaves and even tried a petition to stop the carry law from taking effect. And once it took effect not one of their predictions came true. Yet not a word. After a couple of months I heard someone call one of the few liberal hosted (Mitch Albom) radio shows and say, well? All he could do is say I am glad I was wrong.
They went through the same drill when "Shall Issue" replaced "May Issue". I expended thousands of words online advocating "Shall Issue".
I always ended the pearl-clutching when I suggested that the complainers look to other SI states and see where their "blood-in-the-streets" predictions ever came true. A few responded, calling me "Racist!". I figured my work there was done. :-)