The shooting of a four-year-old boy playing at Harambee Park in Dorchester’s Franklin Field neighborhood has community members and city officials calling for action, starting with a crackdown on disorderly conduct in city parks.

More than 50 residents appeared at the scene of the shooting on Tuesday evening for a rally, calling for families to play a stronger role in preventing future violence. Meanwhile, the mayor’s office has announced tough new sanctions against on motorized dirt bikes, which may have been used by two of the shooters’ intended victims to escape the scene.

According to witnesses, a man approached a group of people standing outside the park’s playground around 9:30 p.m. and began firing into the crowd, striking a child in the back and another man in the foot. Both are now in stable condition, but police continue to search for the shooter.

Police commissioner Edward Davis said individuals on motorbikes exacerbated an already chaotic scene following the shooting and said that the neighborhood can expect a heavier uniformed police presence in the coming days. Davis called on residents to come forward with any information regarding the incident.

“I am beyond outraged by the brazen nature of this incident and sickened by the total lack of regard for human life that led to the injury of this small child,” Davis said in a letter to residents sent to the press. “As a community, we must come together and hold these violent suspects accountable for their wanton and reckless disregard for the safety of the public.”

In response to initial reports that the perpetrator used a motorized bike to avoid arrest, Mayor Thomas Menino announced a homerule petition making it illegal to operate the vehicles within public parks and directing police and transportation department officers to tow motorized bikes that lack proper registration or are being driven recklessly.

In a written statement, Menino said the vehicles pose a public safety hazard and announced that his office would file another homerule petition meant to extend the motorized bike ban from city parks to all of Boston.

“These types of loud, dangerous vehicles are allowing individuals to intimidate our residents and cause disruption in our neighborhoods – and it must stop,” Menino said in a written statement.

State Representative Russell Holmes called the new restrictions “a wonderful thing to do,” but said he needs to take a closer look at the proposal before giving his approval.

“I’ve seen [motorized bikes] run through parks before the shooting and I don’t think they’re safe in general.” Holmes said.