Jape means joke or mock. If it were racial it would have 2 "P"s , I would think.
"Jape" seems to have a several meanings.. Yes, it can be a "prank." However, apparently it can also be used as an insult to African-American folks. I did not know that one......
"Woke" is sometimes used both positively and negatively. My understanding is that it started out with very positive implications, along the lines of "being aware of and sensitive to current issues, especially as they relate to social injustice." However, as it has become trendy to be "woke," some folks have become more concerned with being "woke" than taking the time to understand the social issues themselves and have developed a level of militancy in the way they attempt to help everybody else to be more "woke."
At my school, we have a crew of younger teachers who are very concerned with being "woke" and attempt to dominate discussions as we discuss issues in education around addressing discrepancies in the academic performance of students from different demographic backgrounds. ("Closing the Achievement Gap" is a common topic in public schools.) In their dominance, they shut other folks down, to the point of being degrading. (As an example: A more seasoned teacher raised her hand at a staff meeting a couple of months ago and said, "This issue is pretty deep and we are just starting to have a good conversation about it. Could we have more time to discuss it at a later time?" The response from the "woke" teacher (a white lady) was, "That's just your white privilege talking."
My point: "Woke," I believe, started out as a term with more positive connotations. However, as it has become "cool" to be woke, more folks claim to be "woke" without really taking the time to understand the very important social issues about which they are vociferously preaching. In other words, they are more concerned about being one of the "woke" crowd than actually being "woke," which prevents them from accepting new information and developing a more full understanding of the very injustices they claim to champion. This has given to the use of "woke" as being a derogatory term as well.