You can't support Palestine and also support Israeli-backed Al-Qaeda-linked Syrian "rebels". Who cannot even be compared to Syria of Assad by the weight of atrocities they committed against Syrian citizens.
Vanessa Beeley:

"The "freedom fighters" on the streets are the terrorists who slit throats, hung foetus in trees and sawed off the heads of their captives, massacred entire ethnic communities and stood on their remains drunk on bloodlust. They are the dregs of society whose first instinct is to damage and destroy. Gangs will fight gangs. Law and order is gone. Children are stealing guns and firing them. Sectarian hatred is seeping back. People are terrified. This is the "revolution". The West doesn't breed stability. It breeds hate, chaos and war. Israel is the greatest evil on earth today and now it's unleashed, unfettered and on the move unhindered. Bravo "freedom fighters" and sayanim."

The NATO alliance’s terrorists have committed numerous massacres of Syrian civilians and soldiers, many of which were intended to sow sectarianism, including:

-The June 2011 Jisr al Shugour, Idlib, massacre of up to 120 people (soldiers and civilians) by between 500-600 so-called FSA terrorists; blamed on the SAA as having killed “military deserters”.
-The Houla massacre of over 100 civilians on May 25, 2012, which only 2 days later the UN claimed—without an investigation— had been committed by the Syrian Army.

-The August 2012 Daraya massacre of 245 people and the December 2012 Aqrab massacre of up to 150 villagers.

-The August 2013 massacre of at least 220 civilians (including a fetus, many children, women, elderly) and kidnapping of at least 100 (mostly women and children) in villages in the Latakia countryside.

-The December 2013 massacre of at least 80 residents (many “slaughtered like sheep”, decapitated, burned in bakery ovens) in Adra industrial village.

-The continued terrorist-mortaring of civilian areas and schools; the repeated terrorist-car-bombing of civilian areas and schools.