The Christian image has obviously suffered lately. You could say the US is turning anti-Christian and it is partially our fault. Yes, Jesus said that they hated Him and so they will hate His followers as well, but some of that hate is because of our own sins. We can do better and should do better. But how?
One way is because of our speech. We just don't speak properly to others. The Bible speaks up on this issue to Christians. First of all, remember the golden rule. If you would not someone to talk to you with the tone you are using on them, then don't use it!
A soft answer turns away wrath. Such true words. How often have you yelled at someone and seen progress? Usually when my wife and I have a heated discussion, it just gets us madder. Not until one of us apologizes do we see much progress. When someone yells at you, or challenges your belief, a harsh answer will get you no where.
Let no corrupt speech proceed out of your mouth, but that which is good to the use of edification, that it may minister grace to the hearers. Edification means to lift up. In a newer phrase, if you don't have anything good to say, don't say it. Encourage people.
Let your speech be seasoned with salt. Do unto others as you would have them do unto you. Care for people, everyone. People have feelings. Love them. Whenever you want to yell at someone, think about what they are going through. Walk a mile in their shoes and then walk with them another mile.