Actually, no, it's not.
Amendment V
No person shall be held to answer for a capital, or otherwise infamous crime, unless on a presentment or indictment of a grand jury, except in cases arising in the land or naval forces, or in the militia, when in actual service in time of war or public danger; nor shall any person be subject for the same offense to be twice put in jeopardy of life or limb; nor shall be compelled in any criminal case to be a witness against himself, nor be deprived of life, liberty, or property, without due process of law; nor shall private property be taken for public use, without just compensation.
No death penalty before a trial. I know that LEO walk all over that, and say it's okay. But it's not, it never has been, and they should go to prison when they violate it. And stay there.
Sorry, the courts don't agree and they think you're a little batty.
Ok, maybe that last part was an embellishment.
The rights contained therein apply after an arrest, not before the arrest when the suspect poses a continuing threat to life.
And you said you're a parent and grandparent.
So if the cops were your kids, how many of your kids do you think should die in a futile effort to take someone into custody who's determined not to be taken alive?
Just need a number, sweetie.