
In 2006, Tarana Burke founded the me too. movement to help survivors of sexual violence, particularly
young women of color from low wealth communities, find pathways to healing. Using the idea of “empowerment through empathy,” the me too. movement was ultimately created to ensure survivors know they're not alone in their journey. Source: metoomvmt.org
In October 2017 Actress Ashley Judd accused media mogul Harvey Weinstein of sexual harassment in a breaking story by The New York Times. Soon after, Actress Alyssa Milano reignited "Me Too" with the
tweet "If you've been sexually harassed or assaulted write 'me too' as a reply to this tweet," and it quickly turned into a movement.
Read more about the progression and key events in the movement in the following articles: #MeToo: A timeline of events - Chicago Tribute and Timeline: #MeToo and how the sexual misconduct scandal unfolded - The Times.
From Hollywood to Australia #MeToo has seen women calling Times Up! on sexual harassment. Virginia Trioli hosts a special Q&A with Isabella Manfredi, Josh Bornstein, Janet Albrechtsen, Catharine Lumby & Charles Waterstreet. Duration: 1:01:55. Via ClickView (login required)
Sexual harassment is an unwelcome sexual advance, unwelcome request for sexual favours or other unwelcome conduct of a sexual nature which makes a person feel offended, humiliated or intimidated, where a reasonable person would anticipate that reaction in the circumstances.
Examples of sexually harassing behaviour include:

A working environment or workplace culture that is sexually permeated or hostile will also amount to unlawful sexual harassment. Some of the factors which may indicate a potentially hostile environment include the display of obscene or pornographic materials, general sexual banter, crude conversation or innuendo and offensive jokes.
The Sex Discrimination Act makes sexual harassment unlawful in many areas of public life, including in employment situations, educational institutions, the provision of goods, services and accommodation and the administration of Commonwealth laws or programs.
A person who sexually harasses is primarily responsible for the sexual harassment. However, in many cases, employers and others can be held responsible for acts of sexual harassment done by their employees or agents.
Source: Fact Sheet: Legal Definition of Sexual Harassment - Australian Human Rights Commission