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![Walls of San Juan [2012]](http://farm8.staticflickr.com/7035/6682653961_25513ed10c_s.jpg)
![Walls of Vermont [2011]](http://farm7.staticflickr.com/6006/5987893039_31289cf800_s.jpg)
![Walls of various US states [2011-present]](http://farm7.staticflickr.com/6030/5943497203_6935f99314_s.jpg)
![May Day in London [2010]](http://farm6.staticflickr.com/5075/5897897073_0b40d89cf4_s.jpg)
![Walls of London's May Day Parade [2010]](http://farm6.staticflickr.com/5040/5897865107_9027c32cd9_s.jpg)
![Film SLR negative scans [2000-2001]](http://farm6.staticflickr.com/5263/5888517800_55acdc2093_s.jpg)
![R2K: The 2000 Philadelphia Republican National Covention protests [2000]](http://farm7.staticflickr.com/6022/5888498926_a5f588caa1_s.jpg)
!["Art in the Streets" Exhibit, Los Angeles, CA [2011]](http://farm4.staticflickr.com/3106/5842925769_45e8ae1a9b_s.jpg)
![Walls of California [2011]](http://farm4.staticflickr.com/3051/5833667231_9c3392ba75_s.jpg)
![Walls of Ohio [2011]](http://farm6.staticflickr.com/5217/5518242270_822574f489_s.jpg)
![Walls of London & Essex, England [2010]](http://farm5.staticflickr.com/4090/4980177680_c7f658cf43_s.jpg)
![Walls of abandoned school, Scotland [2010]](http://farm5.staticflickr.com/4138/4750453060_1da82ea034_s.jpg)
![Digitally manipulated images [2000-2003]](http://farm3.staticflickr.com/2718/4392759190_35198b2585_s.jpg)
![Walls of anti-FTAA protest, Miami [2003]](http://farm3.staticflickr.com/2678/4384671421_af9880e4f6_s.jpg)
![Amsterdam, Netherlands [2010]](http://farm5.staticflickr.com/4061/4344319509_1ddd62d5f4_s.jpg)
![Fife Coastal Path, Scotland [2010]](http://farm5.staticflickr.com/4006/4344253931_52c651baec_s.jpg)
![Walls of Shanwell Station [2010]](http://farm5.staticflickr.com/4059/4330793361_4c1caf9ae9_s.jpg)
![Walls of Fife, Scotland [2010]](http://farm3.staticflickr.com/2552/4330750167_a5f17eafb2_s.jpg)
![Walls of Amsterdam [2010]](http://farm5.staticflickr.com/4021/4316236113_a7852e85d4_s.jpg)
![Glasgow, Scotland [2010]](http://farm5.staticflickr.com/4057/4290021195_0c75d1fe41_s.jpg)
![Walls of Glasgow [2010]](http://farm5.staticflickr.com/4013/4286133010_b525ed4a77_s.jpg)
![Bethlehem: Church of the Nativity [2006]](http://farm3.staticflickr.com/2527/4211369874_db3b7b06e2_s.jpg)
![Vermont [2003]](http://farm3.staticflickr.com/2531/4150887501_6e8dd57b57_s.jpg)
![Washington, DC [2002-2009]](http://farm3.staticflickr.com/2800/4151616240_38acbf08ae_s.jpg)
![Ecuador: Banos [2008]](http://farm3.staticflickr.com/2706/4121223727_98ea43fd0c_s.jpg)
![Ecuador: Quito [2007-8]](http://farm3.staticflickr.com/2736/4116282628_fa698e5689_s.jpg)
![Colombia: Santa Marta [2008]](http://farm3.staticflickr.com/2682/4106565839_2d58bee0b3_s.jpg)
![Colombia: Popayan [2008]](http://farm3.staticflickr.com/2552/4107318872_a73962e78a_s.jpg)
![Walls of Edinburgh [2009-2010]](http://farm3.staticflickr.com/2685/4101363936_aecf768694_s.jpg)
![Peru: Cusco [2007]](http://farm3.staticflickr.com/2502/4099080398_95a9208252_s.jpg)
![Ecuador: Cuenca [2007]](http://farm3.staticflickr.com/2738/4099027032_d25198bae7_s.jpg)