How would a Republican President tackle crime?

I’m curious to know how a Republican senate/President would deal with

bank robbery?

protest?

drug related crimes ?

Shootings in public places?

Armed robberies?

Mass shootings?

School shootings?

Financial fraud?

Tax evasion ?

This stuff happens every day. regardless of who is in charge.
Would people still be arrested if caught committing the crimes?
From what I saw during Trumps Presidency armed Republicans patrolled the streets during protests and an African American was suffocated BY LAW ENFORCEMENT OFFICERS during arrest before they were found guilty of any crime and all Trump did was to “praise patriotism”
Serious answers only please.