Clarify the issues. People often have a very unclear idea of what they are objecting to, or what they actually believe. It is best to deal with one topic at a time. Use illustrations wherever possible. Abstract concepts must usually be explained by illustration or analogy.
Antitheses are also helpful.
Highly emotional conversations are usually unproductive These may include yelling, expressing disgust, interrupting, name-calling, ganging up, etc. These behaviors are always harmful to real communication and persuasion. If another person is hostile, there is no need to take it personally. Avoid getting sidetracked. Most questions should be treated as sincere, worthwhile issues.