The actions section will contain an interactive "like" option with the total number of likes on the post and a comment icon with the total number of comments on the post.
mern-social/client/post/Post.js:
<CardActions> { this.state.like ? <IconButton onClick={this.like} className={classes.button} aria-label="Like" color="secondary"> <FavoriteIcon /> </IconButton> :<IconButton onClick={this.like} className={classes.button} aria-label="Unlike" color="secondary"> <FavoriteBorderIcon /> </IconButton> } <span> {this.state.likes} </span> <IconButton className={classes.button} aria-label="Comment" color="secondary"> <CommentIcon/> </IconButton> <span>{this.state.comments.length}</span></CardActions>