That is a very pertinent question for these times. As a person from India I see this sentiment rising here as well - a nationalism that considers certain religions as legitimate and others as foreign. This is a deeply sentimental issue and needs to be handled with much prayer and discernment; there are no easy answers. I will try and respond concerning your questions.
I think we need to be clear that the way of Christ or Christianity is a way of truth. It is not merely a religion like others. And truth has no colour - it is not a white or black or yellow or brown man’s religion.
Unfortunately, history shows that many have misused and abused Christianity and used it for empire building - and that is not just in Africa but also in Asia and other regions. It is therefore understandable that there is a push-back against the ‘white-man’s’ religion. Even in India, there is such a sentiment, even though the reality is that the Christian religion was nothing more than cultural practice for the colonizers and they were in fact going against the core teachings of Christ. But because Christianity and churches were identified as belonging to the oppressors, it became automatically associated with their oppression as well.
In this regard, I like a statement that Ravi Zacharias once said, "You cannot judge a philosophy by its abuse, but rather by the logical consequences of what it actually teaches."
The fundamental teaching of Christ was to love God and love one another - not slavery or colonization. We need to be clear and insistent on this truth.
Also Jesus was not a ‘white man’ but rather a middle-eastern person - this may be helpful in an Asian setting, not so much in Africa.
This is a truth in every part of the world - not just in Africa. Right from Jerusalem and the surrounding regions in the book of Acts to all over the world, the entry of the truth about God and His Son Jesus Christ has always resulted in outrage and opposition because it challenges long-held beliefs and practices. This was true in Paul and Barnabas’ time, it is true today. Perhaps this is why Jesus said,
Matthew 10:34 - “Do not suppose that I have come to bring peace to the earth. I did not come to bring peace, but a sword.”
Idolatry, witchcraft and false philosophies have been challenged and overturned in the light of the gospel of Christ. This has led to churning but has changed lives forever by the millions; in many cases, it was this very conflict that led to a change. On our part, we can only ensure that we respectfully present the truth about Christ and pray that He will bring about change. Conflict and opposition cannot be fully avoided, even Jesus faced it and told us to expect it.