Why do nonmuslims treat muslims so badly (c)?

I can say about situation in former Yugoslavia. During Turkish occupation, some Serbs were forced to convert to Islam to save their lives. A few, mostly upper class individuals, converted voluntarily to preserve their privileges. In some regions there was the case that one of two brothers converted to Islam and one remained Christian in order to protect each other family in the uncertain future. At that time some Albanians moved from Albanian mountains to Serbia and under Turkish protection started terrorising Christians what continued for hundreds of years until today. In Kosovo, for e.g. their percentage in population grew from 0% to almost 90% in 300 years. Bosnia was a religious mix with Serbian majority until the WW2 and other half were Muslims and Croat Catholics. After horrible genocide conducted by Catholic/Muslim coalition, after the war Serbs were not majority anymore. They consisted about 42%, Muslim 42% and Croats 16%.

Somehow, the life was rebuilt, old wounds forgotten and a real multicultural society was established. Muslims were given to be a separate nation (before it was only confession). Serbia helped with education of Muslims (and Albanians and Macedonians) and with positive action they’ve got equal representation in the government, diplomacy, as directors of public enterprises, military, police, culture, sports, everywhere. Muslims and all others were very secular, mixed marriages were normal, girls were well educated and not different form any other western country.

In 90s, probably influenced by outside, some Muslims radicalised and wanted whole Bosnia for themselves although they were not a majority. They were talking about jihad and ‘green transversal’ from Bosnia to Indonesia. America supported them because they wanted to eliminate Russian influences. They enabled arming the Muslims and even cooperated with Iran in transporting weaponry for them. Old coalition with Catholics revived. Vatican’s politics is to eliminate Orthodox and expand further towards Russia. There were several years of bloody war where US and EU were supporting Muslims. Americans even prolonged the war to achieve their geopolitical interests. Somehow, the war was finished carving Bosnia (which never existed as a separate country, it was Serbian land for thousands of years) half/half to Serbian Republic and Muslim/Croat federation. In Sarajevo, the capital city of 5-600 thousands of people, used to be a Serbian majority. Now, there are no Serbs there. Many Islamic fighters from other countries came to Bosnia to live and wait. There were no hijabs before, now many young girls wear hijab and they receive salary for this from S.Arabia.

From earlier secular country, there is now increasing radicalisation and support for ISIS. Bosnia had big companies, whole Yugoslavia invested and tried to develop this region. Now, the economy almost disappeared, former well developed cultural life also. Muslims are not happy with a half of Bosnia, they want whole Bosnia and parts of Serbia where Muslims live. They changed the name and now they call themselves Bosniacs and don’t want to confess that are actually former Serbs, even they still have Serbian surnames. It is simply unbelievable how their mindset was changed in only few decades. They are again secretly arming with US/British knowledge and approval. We will see what the future will bring.