Their problem is ours...

It's about time for the law enforcement agencies of various cities to collaborate on some problems they have in common:
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Tenderloin district continues to stay very busy. We have run several
operations this week to address several of our neighbors' concerns. On
Tuesday at around 11 AM Gang Task Force (GTF) was buying drugs at the
Hallidie Plaza from four young adult citizens from Oakland who decided
to rob our undercover officer by beating him and taking his money. The
visitors from Oakland were surrounded and out numbered by Members of the
GTF who quickly arrested the four for selling drugs and for robbery.
This might be becoming a habit with our visitors from Oakland. On
Thursday, at around lunch time, Narcotics was running a buy bust program
and right after the undercover officer purchased his crack cocaine even
before he could give the arrest signal these two Oakland drug dealers
grabbed an elderly female walking by, knocked her down and began to
punch and rob her. They too quickly found themselves under arrest not
only by the arrest teams who rushed in but also the undercover officer
who felt compelled to jump in to save the victim.