It used to be acceptable because long ago, unless there was something too obvious about any mature content, anything animated was automatically rated G. Not anymore!!
PLOTLINES WITH DRUG ADDICTS; HEY, ARNOLD! IS NOT SECRETLY AN ADULT SITCOM; SMOKERS; ALCOHOLICS; VIOLENT AND GORY DETAILS OF WWII; THE HOLOCAUST, WOODSTOCK AND VIETNAM; DIALOGUES AS, "WE'RE GONNA KILL HER AND SKIN 'EM ALIVE!"