Credo is an academic alternative to Wikipedia. It's a good place to do background research because you can find out more about the topic, see what terms/words scholars might use to talk about it, and see other related topics.
Check out the various entries about walking, pilgrimage, and protest. See what related terms show up and write them down. Use them when you search the databases for articles and books.
The databases featured in this box are particularly useful for this class. You can learn more about databases on the Research Hub.