La Raza wins again!

Apartment residents told to take down U.S. flags...

http://www.katu.com/news/local/64059697.html

Mexican Nationals living in the US are known to use the Mexican Flag as a tool in antagonizing Non-Mexican neighbors which often results in violent confrontations between opposing parties.

I suspect in this case the apartment property owner/manager has chosen to ban the display of all flags rather than face claims of racism.