He said to them: You are well aware that it is against our law for a Jew to associate with or visit a Gentile. But God has shown me that I should not call anyone impure or unclean. (Acts 10:28)
"Love your neighbor as yourself" (Levi 19:18; Matt 19:19, 22:39, Mark 12:31, 12:33; Luke 10:27; Romans 13.9; Galatians 5:14; James 2:8) this one seems to be an important concept.
If any one says, I love God, and hates his brother, he is a liar; for he who does not love his brother whom he has seen, cannot love God whom he has not seen. (1 John 4:20)
The Lord examines the righteous, but the wicked, those who love violence, he hates with a passion. (Psalm 11:5)
Do not oppress a foreigner; you yourselves know how it feels to be foreigners, because you were foreigners in Egypt. (Exodus 23.9)
Blessed are the peacemakers, for they will be called children of God. (Matt 5.9)
Do no wrong or violence to the foreigner, the fatherless or the widow, and do not shed innocent blood in this place. (Jeremiah 22:3)
The counter-protesters (i.e. leftists and liberals) are already down with this sorta stuff.