The art<span> of the </span>Renaissance<span> is characterized by realism. ... In the high </span>Renaissance<span>, from 1475 to 1525, artists including Leonardo da Vinci and Michelangelo focused on space and perspective to lend more realism to </span>art<span>.</span>
I am not sure if this is what you're asking for, but I'll give it a shot!
Graffiti is considered a subject matter, because it vandalized private property, and causes employees or other people to clean up after someone else's mess.
