The Israeli government doesn't need to keep out political activists. Let them come, do some humanitarian work, protest, whatever they want. I highly doubt that these people are going to pose a security threat. Denying their entrance on the grounds that they are pro-Palestinian activists will only affirm the world's mistaken beliefs about Israeli fascism and incite these people to more extreme measures. Please IDF, savlanut.
At least eight killed, 16 wounded in two car bombs in Iraq, police says (Reuters)
from the article: Police identify 300 of the pro-Palestinian activists to arrive in Israel