is characterized by spontaneous execution, large gestural brushstrokes, abstract or abstracted imagery, and intense color fields, all produced on large, monumental canvases.

The movement which produced abstract, intense-colored works generally on large canvases is abstract expressionism.
This movement was established after World War II in New York.
Some of the most notable abstract expressionists are Jackson Pollock, Mark Rothko, Willem de Kooning and Franz Kline. 

Because it is an outlet. most people are very shut off so they will write poetry to.. almost rant. sometimes people can’t say their feelings out loud so they make it into an art form that is poetry, and write it down.

Well some people like the chat but it dissent effect others