La masacre de Columbine /Bowling for columbine- Michael Moore
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3[http://www.youtube.com/watch?v=cTQKPakKy0E&feature=fvwrel]
4[http://www.youtube.com/watch?v=qIV6cuaS9fI&feature=related]
5[http://www.youtube.com/watch?v=Hcp8xT8jsMM&feature=related]
6[http://www.youtube.com/watch?v=EmHxeyq4JdM&feature=related]
7[http://www.youtube.com/watch?v=6ntYm2ug904&feature=related]
8[http://www.youtube.com/watch?v=2fZuGxTB458&feature=related]
9[http://www.youtube.com/watch?v=eaC-sjLhKrY&feature=related]
10[http://www.youtube.com/watch?v=OD1-I4P5e4A&feature=related]
11[http://www.youtube.com/watch?v=UZXxlXL4dwc&feature=related]
12[http://www.youtube.com/watch?v=rxU6vlOj-9g&feature=related]
13[http://www.youtube.com/watch?v=kjMEiDaNaXI&feature=related]