MANAMA, Bahrain — When Bahrain’s pro-democracy movement began its demonstrations in Pearl Square last month, Atif Abdulmalik was supportive. An American-educated investment banker and a member of the Sunni Muslim elite, he favored a constitutional monarchy and increasing opportunities and support for the poorer Shiite majority.

But in the past week or two, the nature of the protest shifted — and so did any hope that demands for change would cross sectarian lines and unite Bahrainis in a cohesive democracy movement. The mainly Shiite demonstrators moved beyond Pearl Square, taking over areas leading to the financial and diplomatic districts of the capital. They closed off streets with makeshift roadblocks and shouted slogans calling for the death of the royal family.

“Twenty-five percent of Bahrain’s G.D.P. comes from banks,” Mr. Abdulmalik said as he sat in the soft Persian Gulf sunshine. “I sympathize with many of the demands of the demonstrators. But no country would allow the takeover of its financial district. The economic future of the country was at stake. What happened this week, as sad as it is, is good.”

To many around the world, the events of the past week — the arrival of 2,000 troops from Saudi Arabia and other neighbors, the declaration of martial law, the forceful clearing out of Pearl Square, the military takeover of the main hospital and then the spiteful tearing down of the Pearl monument itself — seem like the brutal work of a desperate autocracy.