Democratic Rep. Jackie Speier (Calif.) said Wednesday that lawmakers should move toward removing President Trump from office because he is displaying "mental instability" in his refusal to directly denounce white supremacist groups following the violence in Charlottesville, Va.

POTUS is showing signs of erratic behavior and mental instability that place the country in grave danger. Time to invoke the 25th Amendment. — Jackie Speier (@RepSpeier) August 16, 2017

Speier, a frequent critic of the Trump administration, slammed the president for his recent controversial remarks about white nationalists, which have created a firestorm of public outrage.

"Mr. President, no 'good people' march with torches chanting 'Jews will not replace us,' " the California lawmaker wrote in a separate tweet.

Her remarks come after a Tuesday press conference in which Trump stunned his own party and aides by defending the white supremacist groups, declaring that were some "very fine people" on both sides of the argument.

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The president also aggressively defended his initial remarks about the deadly violence that took place in Charlottesville over the weekend, telling reporters at Trump Tower that "both" white supremacist groups and counterprotesters are to blame for the brutality.

Republican lawmakers joined Democratic lawmakers in breaking with the president for failing to condemn the hate groups over what became a deadly demonstration.

One man with ties to the white supremacist groups is accused of driving his car into a crowd of counterprotesters, killing a woman and injuring at least 19 others.

Trump first blamed "many sides" for their role in the violence on Saturday before directly condemning hate groups on Monday. The president then reversed himself again a day later by saying "both sides" are responsible for the events that unfolded in the college town.

Outrage over his remarks has reached a boiling point with critics like Speier insisting that the president is unfit to lead after failing to condemn racism so he can please the extremist followers within his base.