If all Orthodox Christians had the vision to kill the oppponents, that means the whole church was murder.
I'm pretty sure every single historical religious groups has persecuted people of other faiths at some point of history. If there is some group who didn't it's because they never had the chance due to politics of their time.
Why don't God protect His True Church not to be tempered by sin and evil? Why don't God stop His true Church to do so immediately?
The gate of Hade would not overcome God's true Church, even just a momnet.
1.) God allows exercise of free will, even among those in His church
2.) That isnt even remotely what that verse means
Is persecution of opponents just the decision of small groups/particular individuals in the ( Orthodox)Church? Does the whole Church support the persecution of the opponents?
One can't expect all Orthodox Christians to have that much vision.
If all Orthodox Christians supported the persecution of oppenents, that means church as whole became evil and was subjected by sin.Church as a whole indeeded falled and corrupted.
I still struggle this with the teaching of infalliable church(e.g Church as a whole would never be overcome by sin and death., even just a moment.)
Apparently, sarcasm does not translate.
"Persecution" is something which can be defined in several different ways and when we look back at history from our vantage point, we're likely going to see things not as they were, but according to our bias.
No, the Church was not the entity persecuting anyone. There were laws that favored Christianity and set limits on non-Christian religions and discouraged heresies. Beyond that, there were exceptional moments when certain people went beyond or outside of the law.
I'm not sure what exactly you're looking for beyond this. People should not view history as if the historical record is somehow complete. It's only a little picture, and often distorted. What is in the historical record is what has managed first to be recorded at the time and second to have survived to the present day. So, it's not worth getting bent out of shape about.