Debates with friends and family can be a great thing; an exchange of ideas that help you understand a varying point of view is good for you. The problem occurs when you cannot accept the fact that someone may have valid reasons for having an opinion that differs from your own. Instead of having a conversation about topics and issues, people become defensive, and even antagonistic; becoming angry at the other person for not immediately changing their mind and adopting the “correct” way of thinking.
We will constantly encounter people who have different views, and sometimes those views are valid, and other times they may not be. However, as Jedi, we should always be able to hold our calm when encountering different ideas and points of view. If appropriate, we may state our arguments (again, calmly), but in the event that the person stands their ground (and they most likely will), we need to be able to agree to disagree.
Example from my own life: my parents have very different political views. I find the things that come out of my fathers mouth backwards, offensive, and completely uneducated. He considers me young and foolish. We will never agree, he will never accept my opinion, and I have come to accept that. My father is also the type to become enraged when you do not immediately adhere to his opinion, so I simply do not engage in political discussions with him and will physically leave the room when he starts ranting politics (he is often found yelling at the television). It is not worth the fight, and I would rather keep the peace at home.
You could also encounter a person whose religious or cultural background causes them to believe differently. If it is someone you are close to and can comfortably have a debate on the topic with, by all means, discuss, but chances are very low that you can change their mind, so accept that, and see it as an opportunity to learn about another culture.
Everyone does not have to agree with you. In their mind, you are probably just as wrong as they are in your mind. You may both be right. You may both be wrong. Everyone is different from you with their own past experiences that have shaped them, and that is good. Diversity is good. New and different opinions create change and growth, and make the world much more interesting.
Even within the Jedi community, you will encounter people who have very different views of what the Jedi should and should not be. In the eighteen years I have been around the community, I have run into all sorts of different opinions there. I have seen it end friendships. I have seen new communities develop and other sites dissolve for it. And yet the cycles continue and patterns repeated.
Bottom line: learn to not take offense from opinions different from your own. Realize that what another person thinks does not change your thoughts or who you are. If someone chooses to adhere to a lower standard in your opinion, that does not mean you need to lower yourself to their standard. Live your life, be an example of what you believe, and if your way truly has merit, others will inevitably follow suit.
(Disclaimer: I feel the need to point out that I am not speaking in regards to protesting great atrocities in society and what not. I have great respect for those who have protested peacefully for change, though I have less respect if they do not act in ways to support their protest or take the existing actions available to effect change.)