Big Facemask Brother is watching. The coronavirus social-distancing mask police are on the job.

BOS:311 — the website and app where city residents report nonemergency issues such as graffiti and potholes — is now full of posts with diligent citizens complaining about people violating social distancing 6-feet guidelines, along with reports of people not wearing masks in public.

Someone at Christopher Columbus Park wrote, “It’s appalling how many people at Christopher Columbus Park now with no masks! There are appx 45 people here with no masks, dogs running wild! People are not social distancing either!”

Other recent posts included reports of parties.

“The people next door are having a party,” a South Boston resident wrote. “I don’t know what the rules are but can a police officer go over there & remind them there’s a global pandemic & they are supposed to be social distancing & not partying in groups.”

Another South Boston resident wrote, “The deck is full of people not wearing masks, not social distancing, and playing drinking games.”

“The amount of people congregating, picnicking and absolutely not social distancing or wearing masks at the Bunker Hill Monument today, was terrifying,” one person reported. “As a healthcare worker, I consider this disrespectful and ignorant. I support ticketing and/or closing parks all together if adults can’t follow the city’s simple rules.”

A Roslindale resident wrote, “My neighbors are not social distancing and they all have young children. I only am reporting this because I am a registered nurse recovering from coronavirus and it’s very frustrating for me to witness them every single day outside together in a group. No face masks or physical distancing even between the parents. I know it’s a difficult time right now but people need to smarten up and be safe. Thank you!”

BOS:311 is monitoring the reports about violations of public health guidance.

The Boston Public Health Commission and Mayor Martin Walsh have urged people to wear a face covering in public to help stop the spread of the coronavirus. Wearing a face covering in the city is not mandatory.

Walsh tweeted on Sunday, “If you must leave home to pick up essentials or to exercise, follow our guidelines. That means covering your face, staying at least 6 feet away from people and not socializing with others. When you return home, wash your hands and sanitize frequently-touched surfaces.”