Speech codes in our colleges

I believe the speech codes set in place by Universities are fair. Though speech codes can some what limit your freedom of speech, they are set in place for the personal safety of other students. The codes set in place are used to keep harassing and harming of other students to a minimum. The codes are also reasonable, much like the real world in order to protest and picket in a public area you need a permit. This happens in colleges, people may argue that they have the right to assemble, but it has to have a proper time place and manner. Although schools cannot severely punish someone for speaking their mind, they can put someone who is a repeat offender on probation of some sort. This is not in violation of someones first amendment rights because it is voided if harm is done to someone (physically or emotionally) or if it incites violence.
I believe that Speech Codes do not limit someones freedom of speech because they are reasonalbe in the fact that they protect all of the students safety eqaually.