As a Christian, I believe that the scripture contains the basis for all the activity that I, as a member of the Church, need to get involved.
Of course, we can't find all kind of Christian activity on the text in stricto sensu, but we surely need to find a consistent theological ground that clearly support every activity that we get involved into.
That being said, my question is: what is the biblical basis for things like "March for Jesus" or "Jesus Day"? There is any commitment for the church to march into the streets or to make a spiritual parade, like romans had the Lupercalia and feasts like that?
I can't remember any verse in the NT that supports such a behavior.
Some points:
The Wikipedia article provides no such thing as a Bible basis, even in the "further reading section".
No event website provides any Biblical basis at all, like London Jesus Day or Brazilian March for Jesus or even this really old website, from the beginnings.
Here in Brazil, we have the biggest March for Jesus and is important to state that the Pentecostal movement is largely involved with that.