When you have taken part in the violent crimeit may have consequences for your application. If, for instance, you were the first to use violence, you have challenged somebody or if you took part in criminal activities, then you yourself are (partly) to blame for the damage resulting from the violent crime. In these cases you may not get (full) compensation.
However, if you were involved in an act of violence because you were helping a fellow citizen who was being assaulted, then you are not likely to be held accountable.
If you file an application as a surviving relative, your relative must not have contributed to the violent crime. If it is established that your relative contributed to the violent crime, you will be denied compensation.