What action did Trump take regarding flag burning that violated a Supreme Court decision?

The correct action is linked to Trump's attempt to implement a ban on flag burning, which is considered a form of symbolic speech protected by the First Amendment. The Supreme Court has ruled in past decisions, such as Texas v. Johnson (1989), that flag burning is a constitutional right and cannot be prohibited by law. This ruling emphasizes that symbolic acts like flag burning, even if controversial, fall under the umbrella of free expression.

By trying to impose a ban on flag burning, Trump would be violating this established precedent set by the Supreme Court, which holds that the government cannot restrict this form of expression. In contrast, promoting, legalizing, or protesting against flag burning would not conflict with the Supreme Court's decisions, as they do not impose restrictions on the practice itself.