Matthew 11:12 (NIV) as much of my thoughts hinge upon one aspect of truth that is implied in this verse.
From the days of John the Baptist until now, the kingdom of heaven has been forcefully advancing, and forceful men lay hold of it
The entire theme of the Bible is about a kingdom and the rightful ruler of that kingdom. This conflict began long before Adam’s day. An anointed angel rebelled and sinned against God. Ezekiel 28. Satan was cast out of heaven and death came upon the ancient world. Adam’s sin in the garden of Eden brought us into this spiritual battle.
The gospel of Mark portrays a “Cosmic conflict” as the deity of Jesus is revealed. Jesus is the forceful man who violently assaults Satan's domain and confronts the hold that sin has had on man. He has come to rescue us from the dominion of darkness so that we can live in His kingdom.
John came with his piercing message: “Repent, for the kingdom of heaven is at hand” Mark 1:15
Mark records clash after clash with the supernatural. The gospel of Mark is an explanation of Matthew 11:12. It is not that the Kingdom is suffering violence but it is the Son of God who is beginning to tear open the way for the kingdom of heaven.