Those of us in the Christian tradition are mandated to love one another. Period. But Jesus pushed the issue: "You have heard it said, 'Love your neighbors and hate your enemy.' But I tell you, love your enemies and pray for those who persecute you..."
Saint Francis is reported to have famously said, "Preach the Gospel always, and when necessary, use words." His namesake's Holy Thursday homily can be short and sweet, for his actions have already spoken volumes.