Batch auto straighten in Adobe Camera Raw / Bridge

When I load multiple images into Bridge (for example, 300 pictures of a sunset over the ocean), many of them are not level. The horizon is tilted because I did not hold the camera level. So, I go into the Crop settings in Adobe Camera Raw and double click on the "Auto Straighten" button and the image is perfectly straightened. When I select multiple images and then go into Adobe Camera Raw, they all appear along the bottom like a filmstrip. Then I can select all of them and, for example, click the Auto button on the Edit panel and even though I am doing multiple images at once, they all receive unique Light and Color settings specific to each image. Not so using the Crop / Auto Straighten button. Selecting multiple images in Adobe Camera Raw and then double clicking the Crop / Auto Straighten button computes the rotation angle for the displayed image only and then applies this to all of the selected images. Something no one would ever want to happen! Please help me to auto straighten my hundreds of sunset photos all in .arw format. Thank you.