Reporting Vandalism and killing of my Livestock.

[Officer_Reed 0]

Hello. Someone broke into my farm and killed my Horses and Livestock, took my Saddle from a Pig, broke into my Friends Home, and took some other things that I own. I have an Idea of who the person may be, but I don't want to jump the Gun before coming to conclusions. This has been going on for some time now. And I don't know who it is. I wish I could provide Proof, but when I take screen shots it just shows the Mojang Logo. Please someone help me. I can't let this go on any longer. 

(P.S. My new Minecraft name is Justin_Valley)