Too bad they see the need to punish people for actions in history that aren't connected to these Messianic Jews. This may seem obvious, but Jesus and most of his disciples were Jews.
I have never heard of a Messianic Jew, or someone who is an Orthodox Christian (Bible-believing) leaving such "gifts" for "nonbelievers".
Why behave like Hamas or such?
You are right. Violence has no place in a religion that bills itself as one of peace and/or love.
I have a friend in Israel who is a Messianic Jew. She says her family can’t even worship openly in their own home because the downstairs neighbors that just moved in are hostile to Believers, much more than the last people who lived there. They have to be VERY careful so they won’t be targeted.
The latest news is that now they know that Avi was given the bomb by someone dressed as an Israeli soldier.