For the love of animals. Pass it on.
Before I was an animal rights activist, I was a budding human rights activist. While in law school, I helped victims of domestic violence obtain personal protection orders. I studied human rights and refugee law, participated in an asylum clinic, spent all my summer legal internships working with refugee organizations and focused primarily on helping women who were victims of gender-based persecution and violence such as honor crimes, forced genital mutilation, sex-trafficking, and rape.
My first client let me touch the shrapnel that was embedded under the skin in her knee after the Taliban had bombed her village in Afghanistan and killed most of her family. I also represented men when they were in need, like the gentle Congolese man who had been tortured, and had the marks on his body to prove it, because of dubious ties to the wrong political party.
Refugees and victims of gender based violence are an incredibly vulnerable and deserving group of humans. Many of them have no family, no country. Many live their lives in fear. Without the help of international aid groups and non-governmental organizations, they are at constant risk of exploitation, abuse, persecution, homelessness, and death. And yet, I have chosen to dedicate myself and my life to the animals.
I’m sure every animal activist has been challenged on this point: “How can you waste your time on animals when there are so many humans suffering?!” “Why don’t you start with the humans, and when all of our problems are fixed, then you can help animals?”
Of course this is the dominant mentality, based on a presumed superiority of humans, so much so that the slightest harm to a human is often seen to outweigh a tremendous harm to an animal. Given that the capacity to suffer is in no way limited to human beings, this bias in favor of humans is simple prejudice, favoring those we perceive as similar over those we perceive as different and therefore inferior, the hallmark of all discrimination and oppression.
For years I felt paralyzed as I looked out at the world with all of its suffering.
I desperately wanted to help but didn’t know how I could possibly choose between helping the people in third world countries living in extreme poverty, and the millions of children under the age of five dying every year from malnutrition, or the victims of ethnic and religious wars that so brutally claim the lives of innocents at any given time in modern history, genocides like that in Rwanda, Bosnia, Darfur, atrocities taking place right now in Libya, Syria and Yemen. Millions of people, mostly women and girls, are bought and sold into the world of sex trafficking every year to endure unspeakable crimes. And then there are the animals being used for painful and often cruel experimentation in laboratories, the fur-bearing animals like the playful foxes who are killed by anal electrocution so as not to damage their fur or the Chinese raccoon dogs who are routinely skinned alive in order to make knock off UGG boots or for the cheap fur trim on our winter coats. 
But the number of all of these animals combined is a drop in the bucket compared to the 55 billion farmed animals we kill every year for food. Fifty five billion animals. The entire global human population is about 7 billion, and we kill 55 billion animals every year for food. Each and every one of those fifty five billion was an individual with the capacity to have bonded with family and friends and to have led a joyful life like the rescued pigs seen in this video but who instead led a life of intense misery and often sadistic exploitation before enduring the terror and pain of slaughter.
All of these human and nonhuman beings suffer terribly. All of them are worthy of our compassion. I have always wanted to help them all. I still do. But the reason I choose to dedicate the majority of my time to advocating for nonhuman animals rather than all of those deserving humans is thatwe as a society all basically agree on human rights.
When I say we as a society, I do not mean the moral outliers of the international community like members of ISIS, or those in our own society like rapists or serial killers, but those who represent the dominant ethic in the world community, the law abiding members of our society and the international community. And according to that dominant ethic, it is wrong to abuse woman and children. It is wrong to murder innocent men. When we see humans who are starving or being exploited, raped, kidnapped, murdered or tortured, we believe it is wrong. Most governmental bodies around the world, non-government organizations (NGOs), and individuals agree that it is wrong to cause intense physical or emotional pain and suffering to human beings. We criminalize such harm, and we punish those who commit these crimes.
The same cannot be said of animals, especially not farmed animals, whose abuse is accepted by the same moral community that rejects the abuse of humans.
Source: Why I’m An Animal Rights Activist When There Is So Much Human Suffering In The World