Elevatorgate

There are people in this audience right now, who believe that a woman's reasonable expectation to feel safe from sexual objectification and assault at Skeptic- and Atheist events is outweighed by a man's right to sexually objectify her. Elevatorgate is the common name for a controversy in 2011 that touched on feminism, privilege, conference creeps, and the social makeup of the skepticsphere. It started with a video by Rebecca Watson about sexism in the atheist community and caused criticism of Richard Dawkins after he wrote a blog comment in response titled "Dear Muslima". It was a watershed moment that exposed the third major rift within the Anglophone skeptical movement (the first two being religion and politics).

The initial video
In June 2011, Rebecca Watson, the founder of the website Skepchick, mentioned in a vlog an experience she'd had at a recent conference where she spoke about sexism in the atheist community. At 4 in the morning, after a night at the hotel bar, a man followed her to the elevator and invited her to his hotel room for coffee. The invitation made Watson uncomfortable, and she suggested to her audience that they not behave in a similar manner (from 4:30 in):

As it was just a note in a longer video about the conference, it unfortunately went mostly unnoticed, except for two other female atheists who disagreed with Watson and believed the man's comment wasn't aggressive, and ended up devolving into the typical nasty YouTube comment fare. Even this did not cause anyone else to care.

Seriously, watch the original video. No shaming, no naming, no ranting. She did not accuse the man who approached her of rape, she hasn't given any more details about him (and nor has anyone else), so no doxxing either. It probably would have been fine if it ended here, but instead this was the impetus for years of hate.

The reaction
A week later, while presenting at a Center for Inquiry conference, Watson discussed the response to her video, citing some alarming comments and emails directed at her. PZ Myers, a friend of Watson's, would later defend Watson, arguing in a blog post that the insults and slurs directed at Watson were evidence of the sexism within the atheist community.

The post's comment thread was full of trolling and flames, when Richard Dawkins decided to interject with a comment letter headed "Dear Muslima." Dawkins accused Watson of overreacting and compared her experience to those of women being forced to wear burkas or undergo genital mutilation (a classic example of the not as bad as fallacy):

Dawkins identifies as a strong supporter of women's rights and is a vocal opponent of the mistreatment of women by religious bigots; however, his comments drew the ire of many within the atheist movement. Many feminists also disagree with his characterisation of himself as supportive of women's rights, especially after he said rape victims who had consumed alcohol should be considered untrustworthy and shouldn't be allowed to testify against their attackers and insisted being raped by someone you knew was not as bad as stranger rape.

Things generally devolved from there with some of Watson's defenders repeatedly calling Dawkins a misogynist. A lot of big names, attempting to show off their credentials, came out in support of either Watson or Dawkins. The opinion of the lowly peon commenters was mixed, and sometimes quite sexist. Most of those involved agreed people were overreacting, but each blamed the opposite side.

He was also disinvited from a conference after sharing a video mocking feminists. He has also been criticised for "mansplaining" feminism to Muslim women, who have assured him they have things in hand.

The resolution
Guys, don't do that. In a show of good faith, Dawkins arranged to provide childcare at future atheist meetings, a move generally praised by the community.

Three years after, Dawkins apologised for the "Dear Muslima" letter, in passing, on another blog post. Watson accepted the apology as better than nothing, saying "Eh I'll take it".