Saints, let me make something perfectly clear: You cannot nor should not "Preach the Gospel" while walking in a spirit of pride and arrogance at the same time. You really shouldn't. Belfast (the city in northern Ireland) has certain "street preachers" that do not display the character of Christ. They don't display the Holy Spirit's fruit like Jesus did. They aren't preaching out of genuine love for people rather they're preaching out of pride - proud that they're on the streets shouting at people with loud speakers, forcing them to listen (very ineffective by the way). This kind of preaching only works if it's done under the prompting of the Holy Spirit, with his power and his presence. Usually, the Gospel is best shared heart to heart, one on one, by people who are living it - not just speaking it, after all, it's a gospel of love. It's shared best by DOING acts of kindness on behalf of others, like Jesus did - then speaking it. The heart must be engaged first, then the mind.
Jesus spoke of two men who went into the Temple to pray. One fell on his face and would not even look up but cried out for mercy saying he was a sinner unworthy of it. The other man looked down his nose at the man meek and contrite who was repenting and said within himself, "I thank God I'm not like him" - and that is the spirit some of these (not all) street preachers are walking in - "I thank God I'm not like you poor souls walking by, no, I'M SAVED! I'M BETTER THAN YOU! YOU'RE GOING TO HELL!" Now, all that's true, but if it isn't presented to people in love and humility, it will push people away rather than draw them in. These street preachers rarely have anyone stop and listen to them (unless it's to argue) and I've never seen them pray with anyone (they may have - i just haven't seen it in the many times I've witnessed them).
Let's judge them by their fruit (or lack of it). No fruit of the Spirit = no souls saved. Christians, especially those on the streets saying they're representing Jesus, should not be body slamming people to the ground or cussing them out, arguing with them. They shouldn't be fighting, verbal or physical. That's a terrible witness of the one who said "turn the other cheek" and "love your enemy". Belfast has a history of hating their enemies and fighting them and these street preachers are continuing in that tradition, sadly. They should be as gentle as doves. Selah.