The protest was organised by The United Families & Friends Campaign -- a coalition of families and friends of those that have died in the custody of police and prison officers as well as those who are killed in secure psychiatric hospitals.
http://uffc-campaigncentral.net/
http://www.facebook.com/group.php?gid=151535878213986
Some of the campaigns which were represented at the protest:
Justice for Habib 'Paps' Ullah
http://justice4paps.wordpress.com/
http://www.facebook.com/group.php?gid=23916055987
Sean Rigg Justice and Change Campaign
http://www.seanriggjusticeandchange.com/
Roger Sylvester Justice Campaign
http://www.rsjc.org.uk/
JUSTICE for RICKY BISHOP - Murdered in Brixton Police Station in 2001
http://www.facebook.com/group.php?gid=41965963816
Azelle Rodney Campaign for Justice
http://azellerodney-campaigfojustice.moonfruit.com/
United Campaign Against Police Violence
http://againstpoliceviolence.blogspot.com/
Jason McPherson
http://www.indymedia.org.uk/en/2007/10/384586.html
Previous Indymedia coverage includes:
Deaths in Custody
http://www.indymedia.org.uk/en/2006/12/357852.html
Pictures and audio from demonstration against deaths in police custody
http://www.indymedia.org.uk/en/2003/10/279501.html