Newspaper cartoonist Michael Leunig has been axed from his prized position in The Age over an image comparing resistance to mandatory vaccination to the fight for democracy in Tiananmen Square.In an image posted to his Instagram account, Leunig — whose career has spanned five decades — drew a lone protester standing in front of a loaded syringe, mimicking the iconic “tank man” image of protest in China. An inset of the 1989 photo also appears in Leunig’s drawing.The image was posted at the end of September and never made it to print in The Age, and speculation about Leunig’s job...