If you think someone must die

If you think someone must die, please first use a hotline.   https://www.pleaselive.org/hotlines/ has 24/7 help lines.
If you take your own life with a message saying why, what put you in such extreme duress, you will be forgiven and others will understand.
If you kill others you are unlikely to survive and you will be demonized.
Suicide is very undesirable, the ultimate last resort, but much better than killing others. Your life is in your hands. No one else should be in charge of your life. No one else should suffer from your problems. Just as the problems and pain of others should not cause you pain, your problems and pain should not cause the pain of others making you the problem.