A Double Standard?

The subject of this post is distressing but I think it warrants further discussion. I pulled the following excerpts from an AP story.
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ANNAPOLIS, Md. - Murder charges against an Ocean City woman accused of killing her unborn fetus last week were dismissed Thursday — but Christy Freeman was charged with murder in the death of another fetus found on her property.

The legal switch was announced by the prosecutor after a court appearance Thursday by Freeman, a taxi driver who gave birth last week to a stillborn boy but initially told emergency medical crew members that she was not pregnant. Authorities eventually found that fetus hidden under Freeman's bathroom sink, then discovered the remains of three older fetuses on her property.

Freeman was initially charged with murder under a 2005 law that allows murder convictions of people who cause the deaths of fetuses that could live outside the womb. However, that law contains a specific exemption for women who cause the deaths of babies they're carrying.
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Who can explain to me the apparent discrepancy: Freeman murders her unborn children and it is considered a crime (rightly so), and she is punished severely by extant laws. Planned Parenthood engages in exactly the same activity and that it is protected, even celebrated as a "right." Had Freeman only gone to her local abortion mill, she wouldn't be facing any charges.