But as their anxiety to go to Palestine increased, so did the obstacles to their entering it. There was another Arab pogrom in 1929, in which over 150 Jews were killed. The British response, as before, was to tighten immigration. The Labour Colonial Secretary, Lord Passfield, was unsympathetic: his White Paper of 1930 was the first, unmistakable sign of anti-Zionism in a British state paper.