Stand-off ... an anti-Mursi protester confronts soldiers on a
newly built barrier outside the presidential palace.  Stand-off
... an anti-Mursi protester confronts soldiers on a newly built
barrier outside the presidential palace. Photo: Reuters  CAIRO:
Egypt's opposition rejected an offer of compromise by the
President, Mohammed Mursi, to end the country's crisis over a
new constitution on Sunday and called for mass street protests
on Tuesday.  Leaders of the liberal and secular opposition to Dr
Mursi's Muslim Brotherhood set up a final showdown before
Saturday's referendum on the constitution. The Islamists said
they would hold a rival demonstration on Tuesday, throwing up
the potential for clashes.  The liberals don't have any real
existence on the street.   Mohammed Bishawi, Muslim Brotherhood
member  Dr Mursi agreed on Saturday night to drop a
constitutional decree giving himself powers beyond judicial
scrutiny, but replaced it with a new one that insisted the
referendum would go ahead despite calls for