Peel and finely chop the onion. Heat 1 tablespoon of oil in a saucepan. Fry the onion in it. Stir in tomato paste, sweat it, add tomatoes and broth. Bring to the boil, puree finely and season to taste with salt, pepper, sugar and paprika.
Simmer covered for 3-4 minutes. Cut the crust off the bread. Dice bread. Heat 2 tablespoons of oil in a frying pan. Fry the bread cubes for about 2 minutes, turning them over. Peel garlic, cut into slices, add to bread and roast for 1-2 minutes.
Season with salt and pepper, take out and drain on kitchen paper. Cut the bacon into pieces. Heat 1 tsp. oil in a frying pan. Leave the bacon in it for 2-3 minutes while turning it until crispy. Wash chives, dab dry and cut into fine rings.
Arrange the soup, sprinkle with croutons, bacon and chives.