Even before the creation of the [modern] Zionist movement (its first convention was in 1897), Jews were already the majority of Jerusalem's population - as reported by Karl Marx.
“the sedentary population of Jerusalem numbers about 15,500 souls, of whom 4,000 are Mussulmans and 8,000 Jews. The Mussulmans, forming about a fourth part of the whole, and consisting of Turks, Arabs and Moors, are, of course, the masters in every respect... Nothing equals the misery and suffering of the Jews at Jerusalem, inhabiting the most filthy quarter of the town, called hareth-el-yahoud, this quarter of dirt between Mount Zion and Mount Moriah, where their synagogues are situated – the constant objects of Mussulman oppression and intolerance, insulted by the Greeks, persecuted by the Latins"
Quotation taken from Marx's "Declaration of War – On the History of the Eastern Question".
The article was originally published in the New York Daily Tribune on 15 April 1854, after his trip to Palestine.