You're not alone.
I think there's been this false idea that Christians aren't supposed to speak on 'world' matters, but Jesus said occupy till I come. He said we should pray that God's Kingdom should come and His will should be done on earth
as it is in Heaven. There is no racism in Heaven. The whole idea of 'race' is man-made (Acts 17:24-28).
We're still in lockdown where I am, and the church's stream isn't live. The current situation wasn't mentioned but I don't know how far in advance they film. It's a multicultural church with white preachers. I expect that the lead pastor (who hasn't been here long, so don't know about his reaction to previous similar murders) has been grieved by this situation, just from the way he speaks about Christ and people, regardless of skin colour. That said, I don't expect him to mention it next week, but who knows?
I have seen several white pastors and speakers talk about this on social media (see below), so at least some are paying attention and allowing God to touch their hearts. Whether words will turn to action is something we need to pray about. I saw a livestream in which the (white female) preacher said we should physically stamp our feet on the 'head of racism' as a prophetic sign that we want God to destroy it.
Some social media posts:
My focus in this post is on white Christians because, in my opinion, they're the ones with the most resources and influence (humanly speaking). To whom much is given, from him much is required (Luke 12:48). Also, through the blood of Christ we are all family. Not to mention that white people created white supremacy, so it makes sense that they would be instrumental in its destruction. But the world can't defeat racism without the church - they don't have that power, but through the Holy Spirit, we do. The church can't defeat racism without unity. God commands the blessing where there is unity (Psalm 133), as seen on Pentecost (today!) when the Lord poured out the Holy Spirit (Acts 2:1-4). If we're divided or white people have their heads in the sand, this fight will take longer than it needs to.
I think we really need to pray for God to bring about change, and ask Him what part He wants us to play, and how we need to go about it. We need God's grace to forgive, and we NEED to cry out for justice. Above all else, we need prayer - we wrestle not against flesh and blood but against demonic forces. Like they said in The Hunger Games, remember who the real enemy is. I pray God has mercy on us all.
ETA: They are doing things regarding COVID-19 - supporting food banks, women's shelter, encouraging us to give to charities. Yeah, the pastor is very interested in helping the poor and he keeps telling us that we're dying and we need to make our lives count for eternity by knowing Christ and living for Him.