A face-off in the streets of Cairo.

Tension mounts as students clash with police. Tear gas is fired.

It's the first protest since military head, Abdel-Fattah al-Sisi, announced he will run for president.

And with this announcement comes risks of escalating political divisions.

Tensions in Egypt have risen -- as a crackdown by the military backed government on the Muslim Brotherhood continues. Recently 529 Brotherhood members were sentenced to death.