something that happens here. and change doesn't really occur. and the value of peaceful protests, activism, organizing, it reminds the society, this is not yet done. >> and the president's comments come as we hear for the first time from the mother of a 12 year old boy shot and killed by a police officer over a toy gun. mar martin savage was in cleveland, ohio as tamir rice's mother shared her side of the story. >> to answer your question, i'm actually looking for a conviction. >> reporter: speaking for the first time, she says as her son tamir lay dying she tried desperately to get to hem only to be stopped by police. >> as i was trying to get through to my son, the police told me to calm down or they