Former NYPD officer has flown a version of the 'thin blue line' flag for a decade. Now the HOA is demanding it be removed. What's the law? Our expert weighs in.

A reader is irate over advice that homeowner associations must let residents fly 'thin blue line' flag due to legal protections. Our legal expert responds.

I am a retired NYPD officer ... To describe your flag to readers, imagine a regular American flag, but remove the red line from the right of the starfield and the white and red line below ...