Please read this...i need hellppp!pleasee!?

hey im priya and im 16 years old.so i was watching these videos on youtube and first i was watching funny videos and i just kept clicking away and i saw this video about a 9 year old boy making a call to 911 that a guy came to his house at night time and shot his mom,his grandma and one of his grandma's dogs...and i dunnoo it just disturbed me soooooo much i just cant stop thinking about it...its like in me now..like its just making me cry so much and i dunno how to stop thinking about it,and the fact that he was a kid with a 4 year old brother and a few months old sister with blood everywhere in his housee a whole entire night cause he was too afraid to call...it just makes me sooo mad and sooo sad..like i literally wanna adopt those kids and bring them to my house...i dunno what to do to stop thinking about this?please help me...im just very sensitive like that..im pretty sure i'll go into depression after a few days and i dont want to do that...because i've been there and i just cant do it anymore...