When a channel or account is suspended, you'll receive an email with more details about the reason. If you think it happened in error, you can always appeal. Also, here's more info about account terminations, including why it can happen: https://yt.be/help/WX8p . Hope this helps.
Update! We've reviewed and determined that the content falls short of our policy interpretation and we have reinstated your channel. Any actions taken against your account have also been reversed, so there should be no suspension or other penalty against your account. Thanks.