Jason Kessler, one of the organizers of last year's rally, applied for a permit for a second event to take place on its anniversary in August 2018.
A brief fight between two inmates and two Louisiana State Penitentiary guards spilled over into an ongoing prison strike Wednesday.
The incident was filmed in a video that later went viral.
Hundreds of people were arrested across Russia as Putin prepares for an unprecedented fourth term.
The organizers are rallying against policies including the transgender military ban.
May Day became known as International Workers' Day in the 19th century.
The police commander instructed officers to prepare for protests starting April 19.
"We're making it clear that people want and need science to be apart of a political conversation."
According to the Centers for Disease Control and Prevention, more than 600,000 abortions were performed in the U.S. in 2014—with Planned Parenthood responsible for more than a third.
She had "Women's Lives Matter" painted on her body.
"It is unacceptable and un-American for a journalist to be arrested for doing his job," TIRRC Policy Director Lisa Sherman-Nikolaus said.
"This is a symbolic way for the students to participate in their actual education."
Alleging hens that supply eggs to Trader Joe's live in waste, the activist covered herself in waste as well.
Forty-six students from Pennsylvania's Pennridge High School served detention over the weekend because of last week's nationwide walkout. On Saturday, the group used the opportunity to protest, sitting in a circle on the cafeteria floor while linking arms and wearing the names of victims of gun violence.
The altercation took place as hundreds of students gathered outside Southwest High School in Minneapolis.
The shots were first reported at about 2:20 p.m. local time.
Mark Daniel Lewis was charged with manslaughter for allegedly pushing Kenne McFadden into the San Antonio river last year.
"We proved our point," Cohen said.
Kalashnikov USA has a facility near Marjory Stoneman High School in Parkland.
Putin spent well over half an hour talking about futuristic Russian weapons but some noticed the footage they were shown was quite old.
The New Jersey teacher had expressed fears that a shooting could happen at his school.