Boing Boing just posted a link to some wonderful woodcuts by the Asamblea de Artistas Revolucionarios de Oaxaca.

The Asamblea de Artistas Revolucionarios de Oaxaca (Assembly of Revolutionary Artists of Oaxaca or ASARO) grew out of the 2006 Oaxaca teachers’ strike and the violence that followed. ASARO formed as a collective, no individual artist’s names are used, working in a variety of mediums to commemorate public actions and critique political responses.

A few more here