Here is a reading on the Vietnam protest movement in the 1960s along with its vocabulary-building and comprehension worksheet. This material might provide valuable context for students seeking to understand the actions and (I hope) changes consequent to them in our nation right now.
If you find typos in these documents, I would appreciate a notification. And, as always, if you find this material useful in your practice, I would be grateful to hear what you think of it. I seek your peer review.