"how about this "Toy guns can cause you to be killed"."
How about, "Dumb, incompetent, trigger-happy, out-of-control cops can cause you to be killed, toy gun or not."
And you need to remember this if you ever feel like clowning around with a toy gun. You also need to remember that a lot of people carry concealed now too and may mistake your toy 45 to be real and ventilate you also.
I don't see a problem with making toy guns look like toy guns.