Earlier quoted context omitted.
Would you sell a man a gun if they told you: "hey, if you sell this to me, I'm going to go shoot that black kid outside", and then showed you a few videos of them doing this before?
Well in this case since they showed me video evidence of murder, I would call the police (assuming I don't live in a CHAZ zone). This is bogus though. Will Home Depot allow me to buy some rope if I declare to a random employee that I plan on using it to do a lynching on my local colored neighbors? Yes, they will. Does that make Home Depot an immoral organization? Nope.
I'd hope (and expect!) that home depot employees would ask you to leave if you made those statements while trying to purchase rope.