I agree about ignoring the ramblings of conspiracy nuts, but catching those guys alive would still be preferable. Idiots like this rarely work alone. They don't have to be exactly members of some large terrorist organization or cult or any larger group for that matter, but there is always someone else, some connection, some supplier, someone who helped them make it happen. Catch the ****er, interrogate him (if there is no doubt to his crime and involvement, You can connect his ***** to a car battery for all I care), get the info out, and then dispense with him the way the law says You should.