You don't think the violence levels directed against law enforcement personnel has gotten worse over time?
If so, then the same applies to non-cops. However, non-cops don't get to arm themselves like your soldier-cops, or the soldier cops will arrest them.
You don't think the violence levels directed against law enforcement personnel has gotten worse over time?
No. Check the figures for 1990-2010, then look at the last 5 years => https://en.wikipedia.org/wiki/List_of_American_police_officers_killed_in_the_line_of_duty
btw, who do you have in mind to arm and train these soldier-cops - Homeland Security?