Do you have any independent information?
Looking at the first picture it is hard to tell. Other photos in the series make it more obvious. If I am mistaken I will shout it from the rooftops.
In which case this can't be ascribed to racial hatred; it's got to be some other stupid reason, possibly catalyzed by alcohol and/or drugs.
https://ifc.dos.txstate.edu/chapters/pikappaphi.html
Texas State's Pi Kappa Phi.
Thank you.