The definition of anti-semitism accord to ADL is 

The belief or behavior hostile toward Jews just because they are Jewish. It may take the form of religious teachings that proclaim the inferiority of Jews, for instance, or political efforts to isolate, oppress, or otherwise injure them. It may also include prejudiced or stereotyped views about Jews.
First of all Lord Jesus and his Mother Mary; the apostles were particing Jews. They were not rabbical Jews, but temple center Jews. Therefore, Christianity and Judiaism are both modern takes on Jewish temple worship of the ancient Israelite . So, anyone claiming to be Christiwn and anti-Semitic are not following Jesus teaching. No one does Jesus claim to reject his Jewishness. Just about whole Bible except for Luke-Act is done by Jewish people. 

Furthermore, Jesus came to free us from law, but he never said it was wrong. He/God came to realize for lack of better word, we could not live up to the laws. I believe is over 336 laws give or take. These laws were tough during era, where these laws were necessary to set the Jewish people a part and to lesser degree, we Christians are to be holy people. God want us to live up to his teaching and to follow his rules, The Ten commended are basic marker on how to behave and act with others. 

From Exdous 20: 1-21

20 And God spoke all these words, saying, 2 “I am the Lord your God, who brought you out of the land of Egypt, out of the house of slavery.3 “You shall have no other gods before[a] me.4 “You shall not make for yourself a carved image, or any likeness of anything that is in heaven above, or that is in the earth beneath, or that is in the water under the earth. 5 You shall not bow down to them or serve them, for I the Lord your God am a jealous God, visiting the iniquity of the fathers on the children to the third and the fourth generation of those who hate me, 6 but showing steadfast love to thousands[b] of those who love me and keep my commandments.7 “You shall not take the name of the Lord your God in vain, for the Lord will not hold him guiltless who takes his name in vain.8 “Remember the Sabbath day, to keep it holy. 9 Six days you shall labour, and do all your work, 10 but the seventh day is a Sabbath to the Lord your God. On it you shall not do any work, you, or your son, or your daughter, your male servant, or your female servant, or your livestock, or the sojourner who is within your gates. 11 For in six days the Lord made heaven and earth, the sea, and all that is in them, and rested on the seventh day. Therefore the Lord blessed the Sabbath day and made it holy.12 “Honour your father and your mother, that your days may be long in the land that the Lord your God is giving you.13 “You shall not murder.[c]14 “You shall not commit adultery.15 “You shall not steal.16 “You shall not bear false witness against your neighbour. 17 “You shall not covet your neighbour’s house; you shall not covet your neighbour’s wife, or his male servant, or his female servant, or his ox, or his donkey, or anything that is your neighbour’s.”

18 Now when all the people saw the thunder and the flashes of lightning and the sound of the trumpet and the mountain smoking, the people were afraid[d] and trembled, and they stood far off 19 and said to Moses, “You speak to us, and we will listen; but do not let God speak to us, lest we die.” 20 Moses said to the people, “Do not fear, for God has come to test you, that the fear of him may be before you, that you may not sin.” 21 The people stood far off, while Moses drew near to the thick darkness where God was.
These are basics that all human being can follow. We must respect out follow being and take care of our elders, before these laws, they were not being follow. 

Matthew 5:1-11 (Esvuk) 

The Sermon on the Mount

5 Seeing the crowds, he went up on the mountain, and when he sat down, his disciples came to him.

The Beatitudes
2 And he opened his mouth and taught them, saying:3 “Blessed are the poor in spirit, for theirs is the kingdom of heaven.4 “Blessed are those who mourn, for they shall be comforted.5 “Blessed are the meek, for they shall inherit the earth6 “Blessed are those who hunger and thirst for righteousness, for they shall be satisfied.7 “Blessed are the merciful, for they shall receive mercy.8 “Blessed are the pure in heart, for they shall see God.9 “Blessed are the peacemakers, for they shall be called sons[a] of God.10 “Blessed are those who are persecuted for righteousness’ sake, for theirs is the kingdom of heaven.11 “Blessed are you when others revile you and persecute you and utter all kinds of evil against you falsely on my account. 12 Rejoice and be glad, for your reward is great in heaven, for so they persecuted the prophets who were before you.

Now these are not easy to fully follow. It is our human nature to be sinful and to reject morals. From the Jewish people do we have these pearls. So, next time some sad something ain’t Jewish. If you are Christian Jesus is our Lord and Savior. And he was a jew and he lived and died as one.