The phrase "one's fellow human beings" means the people who belong to the same species as you, and who share the same qualities and experiences as humans. Full definition
Personal success and recognition come and go, but making a difference in the real estate industry, in the lives of fellow human beings, and in our great country lasts for generations. (realtormag.realtor.org)
Animals aren't people; how I deal with animals has nothing to do with how I deal with fellow human beings. (crappypictures.com)
I see believers as fellow human beings who still believe what I no longer believe. (nakedpastor.com)