Yeah : street art. Not bad. I like it a lot myself. In fact street art artists are being commissioned in France to do their thing on the tops and sides of ugly buildings thereby alleviating the architectural tedium of factories in the outskirts of Paris. So, I'm not so certain this necessarily qualifies as "illegal" -- at least worldwide. You'll also find many good, serious art books that document street art the world over and view it as a legitimate (as in "legal" at least in these art lovers' view). So, nice, but no cigar.
As far as paying no taxes is concerned. Ask yourself, what is it that you ensure receiving as a citizen in return for taxes -- things you need, things that are good, things you count on without even thinking about it. Roads, road repair : there's a good one.
Police : there's another. Would you want freelance policemen in your city? Would you want a mercenary army? I'm no huge fan of the military, but there's a lot of good it does, in addition to the destructive posturing crap.
Are you environmentally conscious? Do you have ANY idea the hoops oil and gas companies have to go through to drill in environmentally sensitive areas? Probably not. Most people don't. Unless you happen to be in a relatively remote hilly community, say, where an oil company wants to tap into a promising looking reservoir. If you live in such a place, you probably know about the sometimes years-long process the EPA can put "big oil" through to, first, get permission to drill and, second, drill in an environmentally sensitive manner.
You like to vacation a few hundred miles from home? Do you walk or bicycle to get there? Or do you drive a car or ride a plane or ship or train? If you like to take a break every now and again just to get away from it all, you're asking oil and gas companies to find the fuel that can get you there. And that's just your vacation. Just think of your everyday life. You like to use your computer? Obviously, you like the internet. So do I. I like my electricity. I pay my bills. I also want clean air and safe electrical generation plants and for my internet service to be reliable. SO : I pay my taxes so the folks who get my electricity for me and make sure my internet service is reliable don't screw up the environment in the process.
With taxes, it's on and on about the good we get from them. Focusing on "government waste" is a red herring. And who, may I ask, is ACTUALLY doing the wasting? Medicare : old fat lazy smoking people who won't exercise and take responsibility for their own physical and mental health (I'm just generalizing here, so bear with me...). Social Security : old lazy people who had kids they couldn't afford and ended up alienating them and spent money they didn't have on homes and clothes and vacations etc relying on a handout when they got fed up with "working" : and LOOK INTO THIS ONE : poor old FDR didn't intend Social Security to last any much longer than a stop-gap period in the 1930s but which the American public (YES : the American PEOPLE) have been hanging on to for 80 years. Next to these expenditures, the money spent on the military nonsense that paranoid power grasping psychotics get us in to seems like a walk in the park.
Oh, be careful what you ask for : Not paying taxes? What if everybody had the same wish as you -- that all your wishes became reality : WHAT a mess..........
AND what about the "current economic crisis"? Yeah, what about it? What's it based on? Greed? Whose greed? What's that again : WHOSE greed? Think about it.