Thousands  of “halfwit” protesters clashed with police at a violent anti-lockdown rally on the same day NSW ­recorded the highest increase in cases of the outbreak.Lessons on sex, consent and respectful relationships  varies wildly between schools but education bosses will not agree to an audit of what students are being taught.Avid gamer Tom Eisner could soon become part of Australia’s online line of ­defence in the growing battle against hack attacks and cyber warfare.  And Farewells were made for veteran Seven and Nine Network television executive David Leckie