I answered in the comments:
The Congressman described the fetus's humanity: It does something that we are invited to recognize as part of our shared human condition and therefore to appreciate its reality and to feel empathy.Let's remember that, under the law, the abortion right — in the Supreme Court's idealized image — is based on the idea of the woman's entitlement to define her own concept of "the mystery of human life." This is a "philosophic exercise" that "originate[s] within the zone of conscience and belief." This is a deeply serious matter — to the Court. But who believes it? Abortion opponents resist the idea either because they are sure the fetus is a human being or because they wouldn't trust the woman to base her decision whether to abort on sincere conscientious beliefs about the humanity of the unborn. Those who support abortion rights seem — for the most part — to have forgotten the nature of the decision that is reserved, under the law, for the woman. Laughing at the unborn is egregious evidence of this forgetting.
The mockers are taking this delicately stated image of the fetus touching or holding its genitals and turning it into a picture of a baby masturbating — "jerking off," "spanking the monkey" — and asking us to laugh at it, even as we are expected to accept its being killed. The very thing that the Congressman used to call us to think of it as human, they would laugh at before killing it.
If you are going to take it into your hands to kill a human being, you don't diminish it and laugh at it first. For example, an execution — assuming it is permitted at all, as it is in the United States — is carried out with somber respect. Even as this human being will be killed, we must demonstrate that we understand the profundity of what we are doing.
Picture executions where the condemned person is subjected to mockery first. (That was done to Jesus, by the way.) Some would say any death penalty is wrong, just as some would say that any abortion is wrong. But few would say that ridiculing the condemned being — dehumanizing him — is acceptable.
In their eagerness to deny that the fetus is a person, abortion rights proponents — some of them — are making sport of it.
This reminds me of Kermit Gosnell joking about a large fetus, saying that it was big enough to walk to the bus stop. Think about why that was considered shocking by many people.
Here's an idea for an abortion regulation that I've never heard anyone else discuss, but which occurred to me as I've read and reread the Supreme Court cases. A woman seeking an abortion must sign a statement: I have reflected on the nature of the procedure I am about to undergo, and I attest to my sincere belief that it will not kill a human being.