If there is a rise in reported crime in a certain area, a good police department will increase patrol around there. Sure, you can say that it won't always happen but it actually does happen.
Call the police to report a crime. Pick another method of protest.
So the only proposed benefit of calling the police when you're mugged is that they have another source of information about where muggings are happening, to compliment others and help inform their police distribution?
That seems a) unnecessary because they have other channels for the same information, and b) easily replaceable by a one-way interaction, eg, throwing the fact at them without providing an official statement.
Mugging statements are used to create suspect profiles that often target people of the same race who only happen to have a passing resemblance (eg, being black with the same color shirt), and can lead to violence or death when the police chase the wrong person.
That you want the police to distribute themselves different is a pretty weak excuse to send them chasing off after potentially innocent people.
Your comment might me more meaningful if police didn't routinely chase, injure, and kill the wrong person because they got confused about a description.
Call the police to report a crime. Pick another method of protest.