Yeah there are, but you'll never be able to stop people from spreading literature, legal or not, so things like catcher and the rye, mice and men, mockingbird, with all of their controversies are great to have in schools to help our children grow into adults who can identify this stuff for what it actually is and not some deranged gospel.
But then there's also a ton of other arguments to be made about mental health and all that, when it comes to violent psychos we shouldn't get in the habit of settling with a scapegoat
You originally asked if we were going to suggest banning CATR, my point is mostly these books are great examples to help people identify this language and why it should not be used. If you went into a crowded theater and started shouting there's a shooter, you'd be arrested for inciting panic. Its not censorship when the point is stopping speech from causing physical harm. Same way your right to travel isn't infringed by requiring a license to drive