The prayer does call for serious, serious punishment on people. But I didn't call for that, God did.

Let us join Paul and declare anathema upon anyone who loves not the Lord Jesus. (I Cor 16:22)

Persecute them. ... Let them be put to shame and perish. ... Let his children be fatherless, and his wife a widow. ... Let his children be continually vagabonds, and beg. Let there be none to extend mercy unto him, neither let there be any to favour his fatherless children.