For the Lord your God is God of gods, and Lord of lords, a great God, a mighty, and a terrible, which regardeth not persons, nor taketh reward: he doth execute the judgment of the fatherless and widow, and loveth the stranger, in giving him food and raiment. Love ye therefore the stranger: for ye were strangers in the land of Egypt.
Justice for the downtrodden means not despising the weak and not favoring the powerful nor bribes at the bar of justice (court of law).
Also note, God gives the foreigner food and clothing. That is not a reference to the “redistribution of wealth”. It is not something the state should do. It is what God does. The point is that since God loves the foreigner as is demonstrated by the fact that HE feeds and clothes him, we should love him as well.
To say this means the state should take by force from some to feed and cloth the downtrodden is to put the state in the place of God. On the other hand, since God is generous to the downtrodden, the Christian should be as well, but as an act of lovingkindness—not compulsion. Mercy is not justice.
Ideological “class struggle” is the antithesis of Biblical justice.