I’ve thought it might be good to wear some kind of church’s shirt or something - I know that police tend to fuck with people who help the homeless, especially in my area.
As someone else mentioned, this might actually work against you.
With regards to police interference, if you feel you are able, it's worth pushing back against it. If it's not against the law where you live, record any interaction with police on your phone, and know your rights regarding stop and search, detainment, etc. Legally resisting this kind of police overreach has a big impact on increasing the safety for other outreach groups and can embolden others to make positive change if they're more confident they're not going to be harassed by police for doing so.
Jesus Christ that README just kept getting worse. Hard pass on that.