Nothing really wrong with sanctuary cities when they make sure that people reporting crime are not in fear of deportation.

However, what also happens is that they ignore ICE detainers for people who really should be deported due to heinous crimes like murder, rape, sex crimes. Unfortunately the sanctuary city policies have been corrupted to protect serious criminals and let them go free again.

Such as what happened with the Shooting of Kate Steinle.

On November 30, 2017, after five days of deliberations, a jury acquitted García Zárate of all murder and manslaughter charges. He was convicted of being a felon in possession of a firearm but that conviction was overturned on appeal on August 30, 2019.[1]

Killed by someone deported FIVE times. With SEVEN felony convictions.
drug charge in Arizona.
felony heroin possession and manufacturing narcotics.
drug conviction
heroin possession in Washington state.

However, as a sanctuary city, San Francisco's "Due Process for All" ordinance[24] restricted cooperation with ICE to only cases where the immigrant had both current violent felony charges and past violent felony convictions; therefore, San Francisco disregarded the detainer and released him.

https://www.sfchronicle.com/news/art...a8a1801210a92f


https://www.huffpost.com/entry/san-f...cess_n_4006424

Under the new ordinance, approved on Tuesday, unless an individual has a prior conviction for murder, sexual assault, trafficking or assault with a deadly weapon, San Francisco authorities would be unable to keep the person in custody based solely on immigration status.

ICE calls its Secure Communities program "a simple and common sense way to carry out ICE's priorities." But supporters of San Francisco's ordinance argue the program discourages undocumented immigrants from reporting crimes out of fear of deportation.

Unfortunately it seems San Francisco screwed up and let him loose on the street because he only had PAST felonies, not CURRENT ones. It's things like these that make republicans hate undocumented.

A few bad apples screw it up for all of us.