Had Horowitz sent an opinion piece to the editor, it probably would not have been printed, because the newspaper tries to limit columns to campus issues or campus people speaking on larger issues. However, sparking debate is not necessarily a bad thing, and not running the ad puts The Sun even farther on the ropes for catering to liberals and censoring conservatives. This is obvious. Stealing is illegal. It stifles freedom of the press and free speech.
Nobody condones it.
Be more creative next time. It amazes me that none of the hundreds of people who would be screaming bloody murder on this campus if The Sun had run the ad, are standing up to thank or defend The Sun for not running the ad. The rather loud proponents of free speech are just plain wrong. Nowhere is it necessary for a newspaper to print whatever is sent to it. Whoever owns the presses makes the decision as to what runs in those presses.