From http://blogs.timesofisrael.com/protesters-support-for-intifada-in-the-shadow-of-boston-marathon-bombing/. Notice the sign that reads: "From the River to the Sea Palestine will be free," with a picture of all of Palestine in the colors of the Palestinian flag. This slogan intends the destruction of Israel and the creation of a Palestinian state instead of Israel.
July 11, 2014 demonstration
Again, with this slogan, those who support these demonstrations show that they are not for peace or coexistence, but for the destruction of Israel.
Another demonstration is planned for tomorrow night in Copley Square, sponsored by Jewish Voice for Peace and a host of other anti-Israel organizations: Students for Justice in Palestine at BU, Northeastern, and BC, Boston BDS, United for Justice with Peace, International Socialist Organization, etc.
If you want to know what Jewish Voice for Peace really believes, see this statement on their Facebook page. They support ending all American aid to Israel, as well as fully supporting the BDS call. They pretend to be agnostic on the question of whether there should be one-state or a two-state solution, but when you read documents like this, which they endorse, it's clear that they don't think Israel should continue to exist. The BDS movement, as I have discussed elsewhere on this blog, calls not only for equality between Jews and Arabs within Israel (which I also support), and for a withdrawal of Israel to the 1967 lines (which I also support, with some border changes), but also for the complete right of return of Palestinians to Israel, which would destroy the state of Israel.