Messianic faiths come in many forms, including some groups who are actually replacement theologists, and even some doomsday prophecy missionaries.
In other words, they go to Israel, defy Israel’s laws against missionary work, and prostyletize Orthodox Jews by telling them they’re going to hell if they don’t change their beliefs to worshipping Christianity.
Now consider these groups are populated and in some cases, antagonizing Israel’s Jews, in the very regions which are the most controversial to live in, and daily life is under the threat of those who want to exterminate you. So these missionary groups are fueling an already volatile situation, and what they often represent is not really Christian Zionism, but something else entirely.
Jewish Objections to Jesus...
http://www.jewishvoice.org/site/PageServer?pagename=find_JewishObjections
The Parable of the Tenants
Matthew 21v33 “Hear another parable. There was a master of a house who planted a vineyard and put a fence around it and dug a winepress in it and built a tower and leased it to tenants, and went into another country. 34 When the season for fruit drew near, he sent his servants [3] to the tenants to get his fruit. 35 And the tenants took his servants and beat one, killed another, and stoned another. 36 Again he sent other servants, more than the first. And they did the same to them. 37 Finally he sent his son to them, saying, ‘They will respect my son.’ 38 But when the tenants saw the son, they said to themselves, ‘This is the heir. Come, let us kill him and have his inheritance.’ 39 And they took him and threw him out of the vineyard and killed him. 40 When therefore the owner of the vineyard comes, what will he do to those tenants?” 41 They said to him, “He will put those wretches to a miserable death and let out the vineyard to other tenants who will give him the fruits in their seasons.”
42 Jesus said to them, “Have you never read in the Scriptures:
“‘The stone that the builders rejected
has become the cornerstone;
this was the Lord’s doing,
and it is marvelous in our eyes’?
43 Therefore I tell you, the kingdom of God will be taken away from you and given to a people producing its fruits. 44 And the one who falls on this stone will be broken to pieces; and when it falls on anyone, it will crush him.”