Roy and Laurel interrupt a shakedown in a diner by Brick's goons in episode 3x12 "Uprising".
The team arranges a popular uprising against Brick and his thugs in the streets in front of the Glades police station in episode 3x12 "Uprising".
A younger Merlyn kills the man who he thinks killed his wife in an alley, and then an older Merlyn fights Brick in the same alley in episode 3x12 "Uprising".
Diggle is walking down the street when the power goes out and Oliver comes by and saves someone from being hit by a car in episode 3x05 "The Secret Origin of Felicity Smoak".
Oliver and Roy interrogate the pilot who flew Thea and Merlyn back to the city when Sara was killed in episode 3x09 "The Climb".
Oliver and Lance look at the carnage left over from the League civil war and later the battle from a nearby warehouse spills into the streets in episode 4x13 "Sins of the Father".
Source: t3xm3x33 — Twitter
Nate is trying to find his way back to the Waverider when he runs into Charlie and then the Fitzgeralds who have heard of the monster in episode 4x06 "Tender Is the Nate".
Zari, Charlie, and Constantine are walking down the street when Constantine is kidnapped by a man with a strange purple powder in episode 4x07 "Hell No, Dolly!".
Street where Milo causes the first accident in episode 3x03 "The Plateau".
Entrance to the Franklin Street subway station where the people break into the amber in episode 3x05 "Amber 31422".
In the future, the Fringe team locates where Olivia was trapped and then cut out of the amber in episode 5x01 "Transilience Thought Unifier Model-11".
Peter loads the amber containing Olivia into their van and barely escapes the police force in episode 5x01 "Transilience Thought Unifier Model-11".
Walter exits the apartment where the Fringe team is staying, and listens to a CD he found in a burned out car in episode 5x01 "Transilience Thought Unifier Model-11".
Casey Newton visits a store in Texas to learn about her pin but is attacked by two robots. The store then explodes.
From episode 1x02 "The Assassination of Abraham Lincoln".
The team heads to the bank mentioned in the note only for it to be robbed by Bonnie & Clyde who then get into a shootout with Flynn and the Feds outside in episode 1x09 "Last Ride of Bonnie & Clyde".