Curious about what is scaring you btw.
"Oh, but they are not human that can have any rights. Of course they can be killed and expelled."
Just as easily as upstanding citizens today consider the unborn to be subhuman, just as easy has it been in the past (and in the future) for upstanding citizens to consider certain groups of people as subhuman. It only depends on what the rulers consider convenient at the moment, and 90% of the population are ready to adopt any opinion at the drop of a hat if instructed so by their rulers. Especially intelligent people, who can take pleasure in mental games to justify following orders.
The fetus is not to blame for being within the womb. Yet the fetus should be without the right to life, because they are an inconvenience to the mother. What rights does the asylum seeker get, in comparison? They are quite extensive.
Within our life time, the practice of killing newborns and infants will return and will be celebrated by upstanding citizens as a natural and moral thing. People opposing it will be shunned as dangerous and ignorant brutes – a threat to society.