Are Christians and Jews infidels, and does Islam abrogate previous laws while Christianity does not, and does the concept of love in Christianity include enemies while Islam calls for reciprocating evil with like?

Jews and Christians are disbelievers, as Allah the Almighty says: {Indeed, those who disbelieved among the People of the Scripture and the polytheists will be in the fire of Hell, abiding eternally therein. Those are the worst of creatures} [Al-Bayyinah: 6], and His saying: {Indeed, those who disbelieve in Allah and His messengers and wish to discriminate between Allah and His messengers and say, "We believe in some and disbelieve in others," and wish to adopt a way in between – Those are the disbelievers, truly. And We have prepared for the disbelievers a humiliating punishment} [An-Nisa: 150-151]. Jesus, peace be upon him, came abrogating much of what preceded him in the law of Moses, making lawful some of what was forbidden. Allah the Almighty says: {And when Jesus came with clear proofs, he said, "I have come to you with wisdom and to make clear to you some of that over which you differ. So fear Allah and obey me"} [Az-Zukhruf: 63], and He said: {And [I have come] confirming what was before me of the Torah and to make lawful for you some of what was forbidden to you. And I have come to you with a sign from your Lord, so fear Allah and obey me} [Aal-Imran: 50]. Islam permits repelling aggression while encouraging forgiveness and pardoning. Therefore, there should be no argumentation with disbelievers without religious knowledge.