Reading an S3 SecureTransport policy

What does this bucket policy statement do?

{
  "Effect": "Deny",
  "Principal": "*",
  "Action": "s3:*",
  "Resource": ["arn:aws:s3:::reports", "arn:aws:s3:::reports/*"],
  "Condition": { "Bool": { "aws:SecureTransport": "false" } }
}