A San Francisco man blows his lid when some neighbors don't park properly on a steep hill. In Denver, a dog trainer claims her unwelcome puppy advice ends a friendship with the woman opposite. And in Virginia, neighbors engage in a shouting match, supposedly over late-night noise.

When a Houston family is denied access to a Fourth of July party at the neighborhood pool, verbal fireworks are set off. In New York, a man pulls out a switchblade during a school PTA meeting. And in Pennsylvania, a woman taunts her neighbor on her doorbell camera.

An East London woman battles a swarm of her neighbor's bees taking over her bedroom. In Texas, a new mother is shocked to witness her neighbor playing with fire. And a Georgia farmer temporarily blocks a school bus after he claims one of the students flips him the bird.

A St. Louis family is alarmed when a neighbor bangs on their door with a hammer. When their leaf blower disappears, two sisters in Virginia decide to confront the neighbors. And in a small Missouri town, authorities enlist the help of a homeowner to reveal the unusual hiding spot of a missing suspect.

Battling neighbors in San Antonio compare land surveys to determine whose yard owns an extra foot of land. A group of Florida college students are confronted by a man with a weapon when trying to ride the elevator. And a Houston woman confronts her online critic at the neighborhood coffee shop.

In Sacramento, a neighbor mistakenly believes two women exchanging hair products in the park are actually selling drugs. A belligerent woman smashes her neighbor's window in Virginia. And two neighbors in Canada clash about the lawn care specialist working next door.

Two Texas neighbors engage in a fiery debate about where dogs should relieve themselves. Next door neighbors in England are embroiled in a relentless battle allegedly over noise disturbances. And when a California woman accuses a landlord of blocking in her car, a scuffle ensues.

Neighbors in Dayton, Ohio quarrel after construction nails apparently litter a yard where children play. In Olympia, Washington, a couple is awoken by the sound of a neighbor playing basketball against their garage door. And in Little Rock, Arkansas, a woman watching a tornado suddenly finds it spinning towards her.

An Illinois man is threatened by his landlord's son over a lease dispute. In an Oakland, California park, two women have a blazing argument over the right to cook on a charcoal grill. And in Alexandria, Virginia, a neighbor loses his temper over parking.

A South Pasadena woman becomes enraged when a film crew shoots a commercial on her street. A dispute over dogs between neighboring residents in Indiana sparks a feud with an unexpected twist. And a minor disagreement over a seat on the New York City subway spirals out of control as two neighbors hurl verbal jabs and insults.

A couple in Florida are terrified when their neighbor repeatedly bangs on their apartment door looking for a missing bike. A Florida man deals with a trespasser by punching him in the face. And an allegedly stolen yacht crashes into a dock full of neighbors' boats.

A Washington man upset with his neighbors for burning wood in their backyard shockingly turns into a shootout. A Florida woman wrestles with an aggressive neighbor trying to force her way into her apartment. And an escaped emu runs amok in Ohio.

An elderly New York couple finds themselves in the middle of a dispute with their neighbors over a light in front of their house. In Nashville, two neighbors face off about a fence placed over their shared property line. And in Illinois, a woman proves to be all bark when she confronts her neighbors over an off-leash dog.

A neighbor in Arizona creates a stink in an ongoing dispute over trash collection' in South Carolina, a woman goes to battle with her neighbors over her passion for protecting wild geese in her neighborhood.

A Florida woman finds herself in hot water with a fellow resident in her building when she soaks in the hot tub after dark; Two neighbors in California go head-to-head over newly-installed security cameras.

War erupts between two neighbors in a DC parking lot, involving traffic cones and handwritten notes; a Santa Rosa neighbor wears out his welcome donning a controversial shirt in his apartment complex.

A family in Iowa is horrified when they learn an intruder is lurking in their home while they sleep. A property line dispute in Texas gets personal with cursing, honking and a loud bang. And a Florida homeowner contends with racist verbal abuse from his next- door neighbor.

Footage from cellphones, drones, home security cameras and more showcase the kindness and conflict between real-life neighbors throughout the United States.

A sleep-deprived Texan accuses her neighbor of being an agent bent on stealing her computer.