Being passionate about something doesn't mean your right. A lot of times, especially in Christian circles, if someone speaks passionately or emotionally about something, the we feel we must support them and to not do so would be not Christ-like or sinful. I don't think that's true. You still have to evaluate the actual content of what someone is saying even if they're crying when they say it, or they speak emotively on the subject.
About a year ago someone suggested a new ministry for our church. I didn't feel like it was the right move for our church because of our cultural context. But the person presenting the idea spoke to the staff emotionally and passionately. They got choked up at a particularly sensitive and personal part. At the end of the presentation, there was no discussion whatsoever as to whether or not we should pursue this ministry. There was no discussion at all about researching it to find out more about it. The ministry was officially part of our church from that moment on. Since then, the ministry has kind of floundered along, not doing much, wasting energy and effort, and with few others who share this person's passion.
Just because you cry, you're not right. Just because you yell, you're not right. JM