Yes, the Gay-Pride Rainbow Flag represents a direct and aggressive threat to Christianity, because the Holy Bible is against homosexuality and unequivocally condemns it as evil and as a crime that must be punished by the Death Penalty.
Homosexuality has always been condemned by the Old Testament and the New Testament.
God punished nations that tolerated homosexuality as is shown in history, because Jesus Christ, who is God, hates all homosexuals.
It is Jesus Christ, who is God, who killed all the homosexuals and homosexual-sympathizers in Sodom and Gomorrah.
God will eternally hate all homosexuals, and God’s Moral Law against homosexuality will NEVER change.
Christians who tolerate homosexuality will go to eternal damnation in Hell.
It is important to remember that God is the One who decides what is allowed and NOT allowed in Christianity, and NOT humans.
God clearly condemns homosexuality in the New Testament (Romans 1) , and God will enforce God’s Law in this world and the next.
Humans cannot change God’s Law. God Who Exists (Jesus Christ) will punish all Christians who tolerate gay marriage and send them to eternal damnation in Hell.