The police also lied about using water cannons exclusively for fires , when they were clearly aiming at people who were nowhere near fires . Let ' s see a source on them claiming it was only used for fires . They held a press conference less than 24 hours l a t e r n e w s p r e s s c o n f e r e n c e a d dressessundaynightprotest where they talked about using it on protesters too . EDIT That post states a propane explosion was the cause of the woman ' s injuries , yet she somehow had no burn marks ? The explosion of a concussion grenade wouldn ' t ? They ' re used for offensive purposes in warfare , and produce an explosion . Seeing as they were trying to blow up vehicles with these IEDs , it ' s likely that the explosion cause shrapnel to cut her arm . Also , what sort of legitimate police investigation releases evidence on Facebook ? The ones that put out press releases picked up by the media as w e l l c y l i n d e r s r e c o v e r e d a t e x p l osionsiteofDAPLprotestrrn . html . This was just a good post that had both pictures and information .