Judaism and Christianity have both a Biblical basis and a history of violence and coercion. In Judaism, the Israelites were commanded to kill the Canaanites, in what would today be termed "genocidal" or "ethnic cleansing". An example is the destruction of Jericho, where even little children were killed by the Israelites, Joshua 6 (KJV):
20So the people shouted when the priests blew with the trumpets: and it came to pass, when the people heard the sound of the trumpet, and the people shouted with a great shout, that the wall fell down flat, so that the people went up into the city, every man straight before him, and they took the city. 21And they utterly destroyed all that was in the city, both man and woman, young and old, and ox, and sheep, and ass, with the edge of the sword.
This is considered acceptable by Jews and Christians because it was the command of God.
Christianity has a long history of violence of Christian against Christian. Other Christian sects, who were labeled "heretical" to justify their persecution. The Egyptian Christian Copts are considered heretical because of their belief that Jesus had only one nature, whereas most of Christianity had adopted the belief that Jesus had two natures, man and god. The Copts, along with others sects, were persecuted by the church in Rome. The split between Rome and the Eastern Orthodox exacerbated the hostility between their followers. The Protestant reformation brought more conflicts between the Catholics and Protestants. There were massacres of other Christians, like the St. Bartholomew's Day Massacre in 1572. Sir Thomas More was executed in England for refusing to give up his Catholic beliefs. The many European wars in the Middle Ages had a religious component to them. Even World Wars I and II were fought between primarily Christian nations, who had freely attacked and terrorized each other over the centuries.
One test of tolerance is the treatment of Jews. Over the centuries, Jews have been mercilessly persecuted by the Christians, killed, massacred, subjected to inquisitions, and some forcibly converted to Christianity. Whatever Christian Americans may claim today about tolerance, the historical record of tolerance by Christians is atrocious, culminating in the Holocaust during World War II by the Christians of Germany. During the Middle Ages, it was only in Muslim countries that the Jews found relative safety and thrived, with their most famous teacher Moses Maimonides doing his work on the Talmud in Muslim Spain and Egypt. Large communities of Jews lived in Muslim countries till the establishment of the state of Israel in 1948.
Islam also has a history of wars of conquests. The Eastern Roman Empire and the Persian Empire were the superpowers of the day in the years 600 and 700 CE. The Romans and the Persians initiated hostilities against the Muslims. After many battles, both were defeated and their extensive territories came under Muslim control. This was in fulfilment of the biblical prophecy in Genesis 22 to Abraham, which is one of the several blessings for Ishmael in the Bible (KJV):
15And the angel of the LORD called unto Abraham out of heaven the second time, 16And said, By myself have I sworn, saith the LORD, for because thou hast done this thing, and hast not withheld thy son, thine only son: 17That in blessing I will bless thee, and in multiplying I will multiply thy seed as the stars of the heaven, and as the sand which is upon the sea shore; and thy seed shall possess the gate of his enemies; 18And in thy seed shall all the nations of the earth be blessed; because thou hast obeyed my voice.
This prophecy, promise and blessing is fulfilled in Ishmael, not in Isaac, for only Ishmael was the only son, and only until Isaac was born. The coming of a prophet, Muhammad, with a revelation, the Quran, and a religion, Islam, led to the fulfillment of this prophecy with the Muslim conquests of the lands of their enemies in Persia and the Eastern Roman Empire. The Israelites have not come close to fulfilling the terms of the prophecy, while the Ishmaelites have already done so. The prophecy has no time limit, but it is limited to those who declare themselves as enemies, and does not apply to those who remain at peace with the Ishmaelite Muslims. If Biblical promises of God are sufficient justification, as for the Israelites in Canaan, then those who believe in the Bible should have no problem accepting conquests of the Ishmaelite Muslims as being biblically justified.
Forcible conversion is not permitted in Islam, and such a conversion would be void. Muslims have not converted the people of the lands of their enemies who they conquered, like the Christians and Jews of Spain, or the Hindus of India. This is in stark contrast to the forcible conversion to Christianity, starting with Constantine, of all conquered nations in Europe during the Dark and Middle Ages.