In Sweden - where I live - there is a specific class of police called 'dialogpolis' (dialogue police). Their task is to use non-violent means to try to defuse situations, especially those around demonstrations and political manifestations. They are unarmed and wear civilian clothes but are recognisable by their yellow vests with the word 'dialogpolis' on the back. This part of the police corps was started after rioters and looters left large parts of the centre of Gothenburg in shambles in 2001 [1]. Dialogue police can only function in the presence of 'monologue police', i.e. the regular, uniformed and armed type. They are the carrot to the normal police's stick. The jury is still out on the effectiveness of this type of policing and they're often mentioned in a derogative way, partly due to the fact that they often seem to go too far in their attempts to ingratiate themselves with criminal gangs - grilling sausages and playing football does not seem to keep the gangs from committing violence.
I’d argue the opposite. There’s negative symbolic value.