因为他们违反了国旗法规。国旗法规定在国歌播放期间，人们需要立正，并将手放在心脏上，等等。

They were breaking the flag code. It states during the national anthem, stand at attention, hand at the heart, etc.

1942年，国会通过了美国国旗法，法案制定了官方标准，指导我们如何对待珍视的国旗。

In 1942, Congress passed the United States Flag Code, creating official standards for how we treat our beloved flag.

《国旗法》是由一批退役和现役的将军们在军人任命的议会中提出的。 对《国旗法》的投票周四被推迟，以便让一个委员会对其进行研究。

A vote on the Flag Bill proposed by a group of retired and active duty generals in the army-appointed parliament was deferred on Thursday to allow a committee to study it.

如果违反国旗法，你是不能被起诉的。你也不能被强行爱国。

You cannot be prosecuted for breaking the flag code. You cannot be forced to be patriotic.

实际上，正是德拉得·斯科特于1989年创造那个艺术作品，导致最高法院裁定国旗法只是一个准则。

In fact, it was Dread Scott's piece of art in 1989 that led the Supreme Court to rule that the flag code is just a guideline.