The action was the public humiliation of somebody she disagreed with (as he made a sexual joke and she found it inappropriate) rather than handling the matter quietly. The consequential actions included: leaving a number of her own sexual jokes on twitter, making her seem hypocritical, bringing her employer into the fray as agreeing with her actions (probably without their permission), posting a blog post where she advocated speaking to people about things that make somebody uncomfortable, which is not what she did and not saying sorry when she found out that her public shaming had gotten somebody fired.

Later, it was discovered that she has a history of escalating potentially high-friction issues instead of trying to resolve them. This did not win her any sympathy.