I am curious if they typically pick those that might not call the police. I think if she had allowed him to do what he intended to do, he may not have killed her. That is not me saying she is to blame for her death. I am saying if he didn't expect a fight, then he may not have set out to kill someone he might only have been intending SA. He had no weapon and it seemed it was maybe trying to get in to the one lady who was in her house. I wonder if he had done this before and picked other immigrants who may not report the crimes due to not wanting police involvement.

I am not sure this "man" was thinking through if anyone would miss her. He likely wanted what he wanted and just got angry when she fought back. If he's had success before, this may not have occurred to him.
I think he has done this before because doing what he did at that time when others could come along, I do think he was bold and if he's got away with other SA before, it might have given him confidence to go to this more public place to do it.
I'm curious what his criminal history is like in his country. I believe there is a known gang connection.