The note looks like he's pissed at the sound of her walking stick. Does she use that to move around her home? If so, it could be the person directly below her?
There's no "on one hand..." here.
On one hand, asking another tenant to stop making noise and seeing if a compromise can be reached is totally reasonable.
But instead this person decides to harass your grandma and leave racist notes. so fuck them. call the cops on their ass.
There's no "on one hand..." here.