His website has a list of articles in English on Muslims and immigration in Denmark. He is also promoting his book: Among criminal muslims. A psychologist’s experiences from Copenhagen.
Sennels is a psychologist. He got pulled into Islam when working with young criminals in Copenhagen and found that they are 70 percent Muslim:
On the basis of several hundred therapeutic sessions with muslim teenagers Sennels has reached the conclusion that their anti-social behavior does not stem from personal and social problems alone, but that their cultural and religious background plays a significant role. In the first half of the book Sennels's analyzes the psychology of the muslim culture as it shows itself in Western psychological perspective. In the second half he shows how this knowledge can be used in therapeutic and social work.I think that this is what will be happening to all of us, at some point in time. We will be forced to deal with Islam, trying to solve its problems (as Sennels seems to be trying to do indirectly), or fighting off its dogmatic, authoritarian and forceful presence.
Whether we sympathize with Islam (and Muslims) or not, our professional and personal lives (even simple things like maneuvering our streets, as I explain in my post "Visceral Reaction") will be filled with confrontations with Muslims and with Islam.
However "liberal" and "moderate" Muslims appear, and however friendly they are, at some point, they will demonstrate that they have no intention of becoming true Westerners, or allying themselves with anything other than Islam. This is the strength of their religion's mandates, as clearly defined in their Koran.