Evangelical Christians have a right to proselytize. Recruiting others to their faith might seem annoying to some, but is completely within their rights. The history of religion is faith, but also missions and instruction of faith. Groups feel it is their goal to get their word out and bring others into their church.
In order to make your religion bigger and spread farther, you must use this method. There is nothing wrong with Christians doing this, since they are just trying to spread the word of their beliefs. They are not trying to harm or solicate anyone, just trying to help peoples lives.
If people are interested they will more than likely come to you. There is nothing wrong with being polite and sharing your message, or speaking your mind and using freedom of speech in general. However, you can't force someone into religion and you shouldn't pressure people into it. Manners should be used.
I do not believe Evangelical Christians should proselytizes wherever they legally can simply because they are permitted to do so. Doing this would more than likely upset people because not everyone wants to be told about the miracles of Christ, nor do they want to forced into hearing about their religion, especially if they already have their own.
I don't want Christianity shoved down my throat whatsoever. I don't care how legal proselytizing is in America, I have the right to my own private thoughts and freedom from religion, not just freedom of religion. No one needs to convert me to any way of thinking, especially not evangelical Christians. If God wants us to become a Christian, He will show someone the way as opposed to another human being trying to do God's job.