This type of compassion is what we must strive to cultivate in ourselves, and we must develop it from a limited amount to the limitless.
Undiscriminating, spontaneous, and unlimited compassion for all sentient beings is obviously not the usual love that one has for friends or family, which is alloyed with ignorance, desire, and attachment.
The kind of love we should advocate is this wider love that you can have even for someone who has done harm to you: your enemy.