...the preacher is rebuking sin...
No, he's not. He's judging falsely in many of the accusations he throws at people when he has no indication of any truth to them. He is angry and arrogant. He is making everyone else angry and showing hatred toward all of them instead of showing God's love. This is not sharing the gospel. Notice too, that none of the onlookers show any desire to follow Jesus from listening to him. Compare this with the results of the preaching that went on in the book of Acts, where it resulted in people giving their lives to Christ. Sadly, way to much of the street preaching that I've seen, especially those who arrogantly video tape it and put it on the internet to show off their religiosity, is much the same as what i see in this video.
As an example of some of his comments to which I'm referring which he had no indication of the truth of any of them:
"You're a child of the devil"
"You're a liar"
"You're lying to yourself"
"You don't believe in God"
"I'm making a fool out of you"
"You live a lifestyle of sin"
"You're damned"
"You just want pizza and beer"
As for scriptures, in addition to the examples of preaching and it's results in Acts:
“Judge not, that you be not judged. For with the judgment you pronounce you will be judged, and with the measure you use it will be measured to you. Why do you see the speck that is in your brother's eye, but do not notice the log that is in your own eye? Or how can you say to your brother, ‘Let me take the speck out of your eye,’ when there is the log in your own eye? You hypocrite, first take the log out of your own eye, and then you will see clearly to take the speck out of your brother's eye." (Matt 7:1-5 ESV)
"Judge not, and you will not be judged; condemn not, and you will not be condemned; forgive, and you will be forgiven" (Luke 6:37 ESV)
"Do not judge by appearances, but judge with right judgment.” (John 7:24 ESV)
"Let no corrupting talk come out of your mouths, but only such as is good for building up, as fits the occasion, that it may give grace to those who hear." (Eph 4:29 ESV)
"Know this, my beloved brothers: let every person be quick to hear, slow to speak, slow to anger; for the anger of man does not produce the righteousness of God." (James 1:19-20 ESV)
"A fool always loses his temper, But a wise man holds it back." (Prov 29:11 NAS)
"A hot-tempered man stirs up strife, but he who is slow to anger quiets contention." (Prov 15:18 ESV)