Ethics is a strange subject. The term “Ethic” refers to “a set of moral principles, esp. ones relating to or affirming a specified group, field, or form of conduct” [New Oxford American Dictionary].
Moral principles all depend on the individual, some people may see particular subjects to be fine, where as others may view it as being extremely inappropriate.
In my opinion, morals are all about respect. What comes to mind is the old saying, “treat others as you would wish to be treated”, however this is not the case for some people.
Fortunately, in my personal, professional community I am surrounded by some very respectful people. Yet even in some professional communities people may take advantage of your good will. Ethically this is incorrect; nevertheless you may feel obliged to carry out duties that you are not contracted to do.
There are many reasons why you may be taken advantage of or discriminated in any professional community, such as relationships, gender, sexual orientation, blackmail, peer pressure, working conditions, ethnic origin etc.
I have heard stories of these situations from peers and colleges, luckily its not true in my personal professional community.
In the dance community, there is a lot of criticism in many forms. For example dance ability, performance ability, technique, body shape, height, weight, attitude just to name a few.
Although it is not ethically correct to criticize people, as a dancer, we knowingly put ourselves up for the criticism. If you can't hack it, your not ready for the real dance world.