Contradiction with John 15:18-19
These verses explain that being hated by the world is expected if you follow Jesus, supporting rather than contradicting the notion of being hated.
John 15:18-19: If the world hate you, ye know that it hated me before [it hated] you.
Contradiction with Matthew 5:11-12
Rather than contradicting, these verses reinforce the idea that being persecuted or hated for Jesus' sake is a blessing.
Matthew 5:11-12: Blessed are ye, when [men] shall revile you, and persecute [you], and shall say all manner of evil against you falsely, for my sake. [falsely: Gr. lying]
Contradiction with Romans 8:31
This verse suggests that if God is for us, none can be against us, which seems to contradict the inevitability of hatred mentioned in Luke 21:17.
Romans 8:31: What shall we then say to these things? If God [be] for us, who [can be] against us?
Contradiction with Proverbs 16:7
This verse suggests that when a person's ways please the Lord, even their enemies will be at peace with them, seeming to contradict being universally hated.
Proverbs 16:7: When a man's ways please the LORD, he maketh even his enemies to be at peace with him.
Contradiction with Matthew 22:39
Commands to love your neighbor as yourself could indicate harmonious relationships, which might contrast the idea of widespread hatred.
Matthew 22:39: On these two commandments hang all the law and the prophets.
Paradox #1
Some people might see a contradiction in the idea that believers will be hated for following Jesus, even though the message of Christianity also emphasizes love and peace. This could seem inconsistent with the expectation that following a message of love might lead to being disliked or persecuted.