No, because it is a widly known meme and would be considered free speech as satire. Since you did not access the system, there is no crime. If a person was manually entering license plates and entered it into a database, would it be your fault? No, you had no control over that person's actions, and no reasonable person would mistake that as a licence plate. If a computer enters it on its own, then that is also not your fault, the programmer is responsible. You have no responsibility to know how a system handles its database inputs in order to avoid messing it up.