In his third year, one day Harry Potter walks near the zoo park, suddenly a Lion break out and attacks a few kids who happened to be there. Hary takes out his wand and immobilized the lion, so the kids were safe. Next day Rita Skeeter writes in Daily Prophet:
'A brave ministry wizard saves the children from a Lion attack'
Harry writes to the newspaper anonymously saying that he is not a ministry wizard, but a Hogwarts student. So the next morning the daily prophet first page sees the following article:
'A Slytherin Student saved a group of children from an angry Lion'
This time Harry decides to come out publicly, so he writes again to the Daily prophet saying that in fact he is a Gryffindor student, and signs the letter. The next day the front page of the daily prophet:
' THE UNBALANCED, ATTENTION SEEKING, MENTALLY RETARDED HARRY POTTER KILLS THE LOCAL CHILDREN’S PET, A PEACEFUL LION FROM THE ZOO PARK'