many people go to demostrations in order to help gaza (somehow). i know that protesting in demostrations is not part of the sunnah but i dont know what is the dhaleel for this?. people also avoid going to mcdonalds, tescos, marks and spencers etc because they are owned by jewish or zionists and stop buying from israeli zionist companies such as coca cola and maybelline because they belive that most of the money is used to kill the muslims in palestine. is boycotting these companies part of the sunnah? is it haram for us to buy from them? what is the dhaleel?