Writing Alphabet Graffiti Art in Trains

Writing Alphabet Graffiti Art in Trains With Cool Graphics DesignWhile walking her eyes I was interested at one point, then I noticed some people are making something on a train. apparently they're making a painting graffiti. I do not know what type of graffiti they make whether it's graffiti alphabet or the other. After some time observing the reality they create graffiti art, the results