The groups violently clashed with counterprotesters and Antifa demonstrators, which led to the death of one counterprotester and the injury of several others, when a vehicle driven by James Alex Fields struck and killed 32-year-old Heather Heyer.
Two Virginia State Police troopers were killed when their helicopter crashed outside of Charlottesville.
Governor Northam urged residents to "make alternative plans to engaging with planned demonstrations of hate".
Washington is bracing for a white nationalist rally that law enforcement agencies will try to prevent from descending into a melee like the one in Charlottesville, Virginia, that cast a shadow over Donald Trump's presidency a year ago.
"We acted in advance of last year's horrific event in Charlottesville and if we become aware of similar information we won't hesitate to do so again", the company said in a statement.
In Virginia, heightened security measures for this weekend's events include State Police and Virginia National Guard presence in Charlottesvile.
Officials said the declaration would streamline state and local operations this weekend while also allocating $2 million in state funds.
Quick look at the PGA Championship
Only 13 players from that tournament are in the field; Woods missed it due to knee surgery he had that year after winning the U.S. Key statistic: Tiger Woods is the only player to win the PGA Championship back-to-back in stroke play.
WHITE HOUSE: Trump says 'bad environmental laws' to blame for wildfires
A brand new blaze called the Holy Fire was ignited on Monday in Orange County, quickly expanding to more than 1,200 acres. While containment grew to 47 percent, burned acreage grew over the weekend, as well, now sitting at 164,413 acres burned.
Tottenham first Premier League team to fail to make one summer signing
The 46-year-old is refusing to panic about the lack of arrivals and insists he is happy with the direction the club is heading in. Pochettino added: "I am happy to keep all the squad together, there were many rumours during the summer about players out.
Law enforcement and D.C.'s Mayor Muriel Bowser stood shoulder-to-shoulder Thursday touting lessons learned from previous year and patrolling other controversial demonstrations.
"While some of them come in peace, others have expressed an intent on social media to do harm", he said. However, Kessler dropped his lawsuit last week and vowed to forge ahead with plans for a "white civil rights" rally Sunday in Washington, D.C.
Other events were also planned throughout the weekend, including on Sunday, the anniversary of the violence that erupted on the streets of Charlottesville.
White nationalists, neo-Nazis and members of the "alt-right" clash with counter-protesters as they enter Emancipation Park during the "Unite the Right" rally August 12, 2017 in Charlottesville, Virginia.
Lance says he's feeling good about the D.C. counter protests and skeptical that the Unite the Right rally will reach 400 members, as estimated by the group.
The mother of Heather Heyer, the young woman who was killed at the August 2017 white nationalist rally in Charlottesville, is keeping her daughter's memory alive by sharing the endearing messages and momentous that she receives from the supportive public.
"There will certainly be provocateurs trying to get a reaction out of you by trying to stick cameras in peoples' faces, yelling, etc", the Unite the Right website stated. "We the people of Washington, D.C. say unequivocally that we denounce hate, we denounce, that we denounce anti-Semitism and we denounce the rhetoric that we expect to hear this Sunday". The group paraded through the University of Virginia's campus, shouting racist and anti-Semitic slogans.