No, thanks.
I had my last halfway-decent "contact" with LEO's in the 1960's.
Dallas area LEOs weren't so bad until the 1990s, and there are still quite a few decent ones in the mix. Unfortunately there have been a lot of incidents (fortunately that haven't gotten much press coverage nationally, so hopefully their reputation can be salvaged if things get cleaned up) involving faked evidence in drug busts, bogus tickets, intimidation, bribery, etc. that haven't been addressed due to political concerns.
The Sheriff's department is a bit worse, unfortunately; and probably so morally corrupt now that the organization is irredeemable even if a decent sheriff were to ever get elected (not likely in Dallas county these days, sadly). There are still some good people out there, but if you can talk to them privately they'll drop hints about some really serious corruption and scandalous behavior.
Things aren't hopeless, however. A lot of the suburbs in the DFW area have great police departments, and the constables are still virtuous.