300 words and at least 2 sholarly references within 5 years. MUST HAVE IN TEXT CITATIONS

Please answer the question to the best of your ability as if it was present day.  This question is worth 50 points.  Please cite your sources. 

You are assigned to investigate a possible domestic terror attack which occurred on June 19, 2015.  The attack occurred at a Catholic Church where many different immigrant parishioners attend.  Many of the immigrants are from Africa and the Caribbean. 

The attack occurred after-hours and there was a fire set near the church and adjoining Catholic grade school.  –  Spray painted on the wall was, “Go home, America is not for you,” along with racial slurs.

Who do you think could be responsible and why?