This one has actually managed to string an intelligible sentence together so I'm going to reply.

Firstly, the definition of Graffiti:

the illegal or unauthorized defacing of a building, wall or other edifice or object by painting or otherwise marking it with words, pictures or symbols.

It has everything to do with the illegal defacing of public property.

Vandalism.

Common criminals.

Therefore my opinion that graffiti "artists" deserve to go to prison is hardly a controversial viewpoint.

Don't try lecture me about the history or applications of the style that graffiti "artists" use, because it's immaterial.

If you really believe that some people should be allowed to deface other people's property because they're angry at "the man" (shame poor babies), then why not post your address here, so I can come round with a few barrels of tar and paint.

I have something in mind that I think would look beautiful on your driveway, garage door and walls.