Thousands of Tunisians on took to the streets of the capital, Tunis, on Sunday, the latest in a series of rallies against President Kais Saied, accused by opponents of grabbing power amid a deepening political crisis. In July, Saied suspended parliament and sacked the prime minister, before further expanding his legislative and executive powers and suspending some parts of the constitution. The opposition decried the measures, calling them a “coup” and has since staged a string of street protests. Tunisia, long seen as the sole democratic success story of the 2010-2011 Arab uprisings, has sinc…