Teargas fired at migrants attempting to break through border into Macedonia, as thousands remain stranded for days on Greek side.SHOWS: IDOMENI, GREECE (FEBRUARY 29, 2016) (REUTERS - ACCESS ALL)1. MIGRANTS ON RAILWAY TRACKS CLOSE TO BORDER WITH MACEDONIA2. VARIOUS OF MIGRANTS WALKING OVER RAILWAY TRACKS3. MIGRANTS CARRYING TORN DOWN SIGNPOST TO BORDER FENCE4. MIGRANTS CHANTING (English): “OPEN THE BORDER!”5. MACEDONIAN RIOT POLICE BEHIND FENCE6. MIGRANTS WALKING TOWARDS BORDER FENCE7. RIOT POLICE BEHIND FENCE WATCHING MIGRANTS8. VARIOUS MIGRANTS PUSHING THROUGH FENCE WITH TORN DOWN SIGNPOST AS RIOT POLICE WATCH FROM OTHER SIDE9. VARIOUS OF CROWD OF MIGRANTS DISMANTLING FENCE10. MIGRANTS BREAKING DOWN FENCE11. RIOT POLICE OFFICER APPROACHING FENCE AND FIRING TEAR GAS INTO CROWD/PAN OVER CROWD PULLING BACK12. WIDE OF CROWD PULLING BACK AS POLICE FIRE MORE TEAR GAS13. MIGRANTS IN CROWD INCLUDING WOMEN AND CHILDREN RUNNING AWAY14. MIGRANTS PASSING UNDER FENCE INTO CAMP15. TEAR GAS GRENADE SMOKING IN FIELD16. WOMAN WITH CHILDREN PASSING BY CAMERA17. INJURED MIGRANTS SITTING ON GROUND18. MAN PULLING LITTLE GIRL CRYING FROM UNDERNEATH FENCE19. MIGRANTS DRINKING AND REACTING TO SOUND OF SHOTS20. VARIOUS MIGRANTS IN OPEN FIELD