That is like saying abolitionists should have compassion for the feelings of slave owners -- by supporting slavery. Or that people in the Third World who are against imperialism, who don't have access to clean drinking water should have compassion for the possibly offended fat Americans who want to drive SUVs, eat meat, dairy or eggs every meal of everyday and otherwise live a ridiculously lavish lifestyle because of said imperialism -- since these slovenly people believe the American military is some global social welfare provider, and thus the more valid perspective of the colonized could offend them.
You cannot equate the lives of animals, to the taste preferences of certain humans, unless you have a sick worldview. Also, imho, vegetarians cannot really speak out for animals, either, sorry.
You see things as black an white, right and wrong. You presume that those who have power over you see things as black an white, right and wrong. You then think that their cut of justice is imbalanced from your own. That's to say; you project your own right and wrongness onto "them".
That would be incorrect. Those who have power over you have already transcended the black an white polarisation of right and wrong which you yourself are afflicted by. In time you'll become like them, as much as that that thought now fills you with horror, and you'll come to understand right and wrong as subjective.
In time, when you have more life experience, you'll come to realise the laws which govern "what goes down" as being universal laws and you won't need to argue.
Until that time we all welcome your heart-felt sincerity in speaking out for what you believe is right, and wrong, in this world.
My only advice, to you, is to not cause anyone too much pain or guilt as you yourself express your own definition of what you believe is right, and wrong, in this world.
This world is energy. Morality is the affair of man. But, man is the affair of energy. However, morality is not the affair of energy. The law which governs energy is not morality, but love. Love is very mysterious to the ego. There is a great gulf between Love and Morality... The narcissism of Man.