Yes, the involvement of a child will bring more attention to the issue of unrest between police and community members, because the child is obviously innocent. There is no reason that the child deserved to be shot during that encounter, so the system failed her somehow. It's important to make sure that the government representative, the police officer, didn't act recklessly or negligently in a way that caused the child to suffer harm.
There is so much unfortunate unrest between communities and the police, particularly between minorities and the police. When a shooting happens between a member of a minority and the police, the issue makes headline news. For a child to be involved and also a victim, the incident will receive continuous news coverage and encourage people to take sides between the woman and child and the police, causing more unrest in an already delicate situation.
A child is believed to be innocent by their vary nature because they rarely can protect themselves and because they are young and usually not lethally violent. The fact that a child was shot when the child was not doing anything wrong and should not have been involved in the situation will bring this situation to the spotlight and will make it "headline worthy," which means more people will be interested and will care about the outcome of the situation.
There will not be more attention paid to unrest between the police and community members, despite the tragic shooting of a five year old. The mother appears to have not heeded police warnings. While it is tragic, the situation was avoidable. There have also been plenty of legitimate cases that have brought the issue to the forefront.