Science isn't involved in moral decisions, social attitudes, or beliefs. But, clearly science and scientists are certainly influenced by them. Goal of Science. A fact is what most everyone agrees to be true. Nope, they are only our best guesses at the time.
Facts are theory laden encumbered by the prevailing ideas, or paradigms, of the day.
A paradigm is a way of looking at the world. A paradigm is essentially your perspective or outlook on a situation. It is difficult to escape and see past the paradigms of the day. While sitting in church we saw some friends, Dennis and Betty, that we hadn't seen in quite awhile. After the ceremony we got chatting and it turns out that they were there for the bride, Kelly.