How to remove objects from an Enumerable collection in a loop

foreach (MyObject myObject in MyListOfMyObjects)
{
     if (condition) MyListOfMyObjects.Remove(myObject);
}

foreach (MyObject myObject in new List<MyObject>(MyListOfMyObjects))
{
     if (condition) MyListOfMyObjects.Remove(myObject);
}

List myFilteredList = new List();
foreach (MyObject myObject in myListOfMyObjects)
{
     if (!condition) myFilteredList.Add(myObject);
}

var myFilteredList = from myObject in myListOfMyObjects
                     where !condition
                     select myObject;

void RemoveAll(object condition)
{

    bool found = false;

    foreach(object thisObject in objects)
    {

        if (condition)
        {
            objects.Remove(thisObject);

            found = true;

            break; //exit loop
        }
     }

    // Call again recursively

    if (found) RemoveAll(condition);

}