What has changed in the 6 months since the Charlottesville rally

Experts who monitor hate groups weigh in on changes since Charlottesville.

Reverberations from the rally and ensuing violence -- including a woman who was deliberately mowed down -- continued for months, including online.

In the months since the violence, social media companies and Internet-based operations worked to curtail their platforms' use by individuals associated with white supremacist or other hate groups, experts said.

“I’ve heard other officials at technology companies say Charlottesville was so shocking and so in-your-face that they realized they didn’t want to play a role in furthering it,” Beirich told ABC News.

Social media sites, including Twitter, took similar actions. Twitter adjusted its guidelines in December and removed individuals whose content did not meet the company's guidelines.

Segal said the moves by tech companies, as well as other issues like infighting among the members of the hate groups, makes it “not surprising that the movement is not as coherent as they'd hope it would be.”

“The harmony in the movement was pretty short-lived,” he said.

“But they are still around, and they are still trying to mainstream their message. They're still trying to find ways to amplify their narratives and their voices,” he said.

“My hope is that the resolution will stand the test of time ... that for the first time ever we've got this demonstrable statement that this stuff is bad and everybody agrees,” Beirich said.