Throngs flocked to Athens on Sunday to call on the ruling Syriza party to stand up to international creditors and reject further austerity measures.In the second mass demonstration this week alone, thousands of protesters chanted \u0022No to the euro\u0022 and \u0022The people will not be blackmailed.\u0022\u0022We’re here to show there are a lot of us,\u0022 protester Katherina Sergidou, a member of Syriza, told The Irish Times. \u0022A big window has opened—a window of change.\u0022We Interrupt This Article with an Urgent Message!Common Dreams is a not-for-profit news service. All of our content is free to you - no subscriptions; no ads. We are funded by donations from our readers.Our critical Mid-Year fundraiser is going very slowly - only 872 readers have contributed so far. We must meet our goal before we can end this fundraising campaign and get back to focusing on what we do best. If you support Common Dreams and you want us to survive, we need you now.Please make a tax-deductible gift to our Mid-Year Fundraiser now! \u0022I believe we have the power to build a society here in Greece where, even without a lot of money, we have our dignity,\u0022 Sergidou added.Prime Minister Alexis Tsipras of the ruling Syriza party is slated to meet with heads of the European Commission, the European Central Bank, and the International Monetary Fund on Monday.The emergency meeting falls ahead of the Tuesday deadline for a massive payment to the IMF.Greece\u0026#039;s lenders have sought to\u0026nbsp; impose stringent austerity measures in exchange for relief funds. But protesters Thursday urged Syriza officials, elected on an anti-austerity pledge, to reject more cuts.Meanwhile, some within the Syriza Party are openly questioning whether a Greek Exit from the Eurozone, or Grexit, is preferable to the terms of the country\u0026#039;s creditors.