I only see female fetus abortion from newspaper.
Never heard about abortion nor killing about male infants, male fetuses.

Any cases which shows that?I remember some article which explains male infant genocide in the middle age, but can not find it.

Try looking in the Bible (or the Torah). Ironically, God did it.

Death of Firstborn (Ex. 11:1 - 12:36) מַכַּת בְּכוֹרוֹת

The tenth and final plague of Egypt was the death of all Egyptian first born males — no one escaped, from the lowest servant to Pharaoh's own first-born son, including first-born of livestock. This was the hardest and cruelest blow upon Egypt and the plague that finally convinced Pharaoh to submit, and let the Israelites go.


God told Moses that this plague would cause Pharaoh to send the Israelites away, and ordered him to prepare the people to leave. He also commanded Moses to teach the ritual of Pesah - the sacrifice of a lamb for God, and the eating of Matzot ("Poor-man's Bread" לחם עוני). God told Moses to order the Israelites to mark their doorpost with the lamb's blood, in order that the angel of death would pass over them.


At midnight, God came through Egypt to take the life of all the Egyptian first-born, including Pharaoh's own son. That night, there was a great cry in Egypt, such as had never been heard before, or ever will be heard again. However, no Israelite first-born was killed, as God "passed over" the Israelite houses.


After this, Pharaoh, furious and saddened, ordered the Israelites to go away, taking whatever they wanted. The Israelites didn't hesitate; and at the end of that night Moses led them out of Egypt with "arms upraised." [3]

Didn't a king of some form also command all first born sons to be killed when he heard that the arrival of a new king (Jesus) was about to come..?

I think it's been done a couple of times. It's a different thing though. The first-born son, biblically and socially speaking, is the most valuable of all children. To take this away would be the worst thing you could do to someone.

Mine was taken from me. Huge alienation / brainwashing at this point, years of it.