In an all black neighborhood this happened
Someone painted swastikas, KKK, N*****, etc all over the school. The police determined it wasn't whites but black kids playing a prank. The paint soaked into the asphalt and the walls of the school and it took a lot of money to remove the vandalism.
The walkway was black asphalt and there was no way other than removing the asphalt and laying down another walk area.