You probably couldn't if you did so as a student, especially if doing so for a student publication. Reminds me of how the University of Illinois rescinded a tenure offer to Steven Salaita after he was accused of being anti-Semitic in tweets about Gaza. He would have been safe if he had tweeted after officially accepting the job: https://www.nytimes.com/2014/09/13/world/middleeast/professo...