I just cannot wrap my head around this mentality. Can you help me?

https://youtu.be/8i7c_pt_rjE?si=L_J90v5pUhZZZjZj

Leftists are WAY too happy about letting KNOWN violent offenders run around and do as they please. Meanwhile they target LAW ABIDING gun owners for meaningless infractions that they wouldn’t even consider applying against actual criminals!
Can ANYONE justify for me even arresting an OBVIOUS senior citizen victim of crime for defending himself and his home from multiple KNOWN armed thugs?
How do you think justice is served by waiting until law abiding citizens who meaningfully contribute to our society are raped, robbed and murdered by repeat offenders and you spend more time, energy and money investigating and prosecuting victims than criminals?
I just cannot wrap my head around this mentality. Can you help me?
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