but zahid says it's not intended as irony.khalid zahid: there is a line, there is a red line for humor. if you go, you pass that red line, you lose your message. it is not an art piece anymore. reporter what does it mean if : something is no longer art? is this not self-censorship? we're heading to northeastern saudi arabia to meet our next artist. but it's not going to be easy. the ministry of culture and information is trying to block us, saying it's too dangerous for a western camera team. finally we're able to obtain permission to go to qatif, where the largest concentration of the shia muslim minority in saudi arabia lives. we meet hussein al-mohasen. he found fame by making prints of tanks on which he wrote words such as "ice cream" or "love" in bright colors. hussein al-mohasen: we know that tanks are built for war, the machine war, so i just wanted to change the machine war to something different. reporter he has also broached : taboo subjects such as obligatory prayer times. hussein al-mohasen: we are the only country